Effects of interventions implemented by occupational health professionals to prevent work-related stress complaints: a systematic review.

Work-related stress complaints are a growing societal problem. Occupational health professionals often play a key role in its prevention. However, studies providing an overview of preventive interventions and their effectiveness are lacking. Therefore, the aim of this systematic review was to summarise the evidence on the effectiveness of interventions delivered by occupational health professionals to prevent work-related stress complaints.A systematic search in PubMed, Embase, PsycInfo and Medline was performed in May 2023 based on PICO (population, intervention, control and outcomes) elements. Inclusion criteria were: peer-reviewed papers with a randomised controlled trial design, quasi-experimental design and pre-post evaluations with a control group; working populations not on sick leave; interventions delivered by occupational health professionals; and stress outcomes. Data were extracted using a predefined extraction form, risk of bias was assessed using the Cochrane risk of bias tool for randomised trials (RoB-2) and Risk of Bias in non-randomised Studies-of Interventions tool, and a narrative analysis was performed to summarise data.Nine studies were included in this review and encompassed a diverse range of populations, interventions and professionals involved, outcome measures, and effects observed. Five studies found either mixed effects on stress outcomes, short-term positive effects, or positive effects in a subgroup of participants demonstrating high adherence to the intervention.As the results show mixed findings, a high risk of bias, and a limited number of studies was available, more research is needed to the effectiveness of the interventions and the factors underlying this.

Do health professionals' attitudes towards alcohol use matter for alcohol prevention efforts? Results from the WIRUS-OHS study.

BACKGROUND: Use of alcohol is a major public health issue, representing the 7th largest burden of disease in the world. Workplaces offer a unique arena for health initiatives addressing alcohol use, where occupational health services (OHS) personnel play an important role. However, we do not know if the extent of such initiatives may be influenced by personal drinking attitudes among OHS personnel. Thus, the aim of the study was to explore how drinking attitudes among OHS personnel were associated with their frequency of working with alcohol-related cases and with their views on alcohol prevention activities in the OHS. METHODS: The WIRUS project included a cross-sectional survey of attitudes and practices among OHS personnel (n = 325) employed by Norwegian OHS services (n = 69), who informed about sociodemographic and professional characteristics, drinking attitudes, frequency of cases with alcohol-related issues, and perceptions toward the role of the OHS in primary, secondary, and tertiary alcohol prevention activities. Measures of associations were examined with linear and logistic regression models. RESULTS: Drinking attitudes were unrelated to the frequency of working with alcohol-related cases. Physicians, psychologists, and nurses had higher frequency of working with alcohol-related cases, compared to those with other professional backgrounds (ß = 0.46, p = 0.01). Drinking attitudes were also unrelated to attitudes towards primary/secondary/tertiary alcohol prevention activities in the OHS, while female OHS personnel were more positive towards increased primary alcohol prevention activities in the OHS (OR: 1.82, p < 0.05). Only marginal portions (1%-3%) of the variance in attitudes towards alcohol prevention activities in the OHS were accounted for by the models. CONCLUSION: This study did not find evidence of associations between OHS personnel's drinking attitudes and their practices and attitudes towards alcohol prevention activities. The lack of association between OHS personnel's attitudes towards alcohol use and their attitudes and practices relating to alcohol prevention in the workplace might point towards professionalism, as personal attitudes appear not to interfere with their priorities and professional mission. Given the small amount of outcome variance explained by the tested models, other variables should be used in future studies.

A Context Analysis with Stakeholders' Views for Future Implementation of Interventions to Prevent Health Problems Among Employees with a Lower Socioeconomic Position.

Purpose Health problems among employees with a lower socioeconomic position (SEP) often result from an interplay of problems on multiple life domains. Contextual factors greatly affect implementation of interventions that aim to solve these type of problems. The aim of this study was to gain insight into the organizational and socio-political context for implementation of preventive interventions that consider multiple life domains among employees with a lower SEP. Methods In total 16 semi-structured interviews were conducted with stakeholders at organizational level, occupational health service (OHS) level, and at socio-political macro level. Thematic analysis was performed to identify themes that describe the perceptions of stakeholders about the impact of contextual factors on implementation. Results The following themes were identified: (1) the importance of addressing problems on multiple life domains among employees with a lower SEP, (2) unclarity of responsibilities for solving problems on multiple life domains, (3) necessity of better collaboration between occupational and curative healthcare, (4) insufficient investments in prevention by employers, (5) difficulties in early identification of employees at risk for health problems, and (6) risk of conflicting role for supervisors in addressing problems on multiple life domains. Conclusions Implementation of preventive interventions considering multiple life domains among lower SEP employees is challenging, due to various contextual factors. To improve the feasibility, many different stakeholders both in- and outside occupational health practice need to be involved, collaborate, and need to be convinced of the added value to prevent problems on multiple life domains among employees with a lower SEP.

The effectiveness of removal from exposure and reduction of exposure for managing occupational asthma: Summary of an updated Cochrane systematic review.

BACKGROUND: The objective was to update the 2011 Cochrane systematic review on the effectiveness of workplace interventions for the treatment of occupational asthma. METHODS: A systematic review was conducted with the selection of articles and reports through 2019. The quality of extracted data was evaluated, and meta-analyses were conducted using techniques recommended by the Cochrane Handbook for Systematic Reviews of Interventions. RESULTS: Data were extracted from 26 nonrandomized controlled before-and-after studies. The mean number of participants per study was 62 and the mean follow-up time was 4.5 years. Compared with continued exposure, removal from exposure had an increased likelihood of improved symptoms and change in spirometry. Reduction of exposure also had more favorable results for symptom improvement than continued exposure, but no difference for change in spirometry. Comparing exposure removal to reduction revealed an advantage for removal with both symptom improvement and change in spirometry for the larger group of patients exposed to low-molecular-weight agents. Also, the risk of unemployment was greater for exposure removal versus reduction. CONCLUSIONS: Exposure removal and reduction had better outcomes than continued exposure. Removal from exposure was more likely to improve symptoms and spirometry than reduction among patients exposed to low-molecular-weight agents. The potential benefits associated with exposure removal versus reduction need to be weighed against the potential for unemployment that is more likely with removal from exposure. The findings are based on data graded as very low quality, and additional studies are needed to generate higher quality data.

Allergic reactions and adverse events associated with administration of mRNA-based vaccines. A health-care system experience.

Background: Adverse reactions, including anaphylaxis, to messenger RNA coronavirus disease 2019 (COVID-19) vaccines rarely occur. Because of the need to administer a timely second dose in subjects who reported a reaction to their first dose, a panel of health-care professionals developed a safe triage of the employees and health care providers (EHCP) at a large health-care system to consider administration of future dosing. Methods: There were 28,544 EHCPs who received their first dose of COVID-19 vaccines between December 15, 2020, and March 8, 2021. The EHCPs self-reported adverse reactions to a centralized COVID-19 command center (CCC). The CCC screened and collected information on the quality of reaction, symptoms, and timing of the onset of the reaction. Results: Of 1253 calls to the CCC, 113 were identified as requiring consideration by a panel of three (American Board of Allergy and Immunology) ABAI-certified allergists for future dosing or formal in-person assessment. Of the 113 EHCPs, 94 (83.2%) were recommended to get their second dose. Eighty of 94 received their second planned dose without a severe or immediate reaction. Of the 14 of 113 identified as needing further evaluation, 6 were evaluated by a physician and subsequently received their second dose without a serious adverse reaction. Eight of 14 did not receive their second dose. Only 5 of the 113 EHCPs reported reactions (4.4%) were recommended to not take the second dose: 3 (2.6%) because of symptoms consistent with anaphylaxis, and 2 because of neurologic complications (seizure, stroke). Conclusion: The panel demonstrated that, by consideration of reaction history alone, the ECHPs could be appropriately triaged to receive scheduled second dosing of COVID-19 vaccines without delays for in-person evaluation and allergy testing.

Mental health workers' experiences of support and help-seeking following workplace violence: A qualitative study.

The consequences of workplace trauma among mental health staff can include physical injuries and somatic disorders, professional exhaustion and burnout, depression, anxiety, and other occupational stress injuries. For the well-being of staff and patients, there is a need to understand mental health workers' experiences following exposure to workplace trauma, any subsequent mental health problems, and the process of help-seeking. The nuances of these experiences can best be captured through qualitative exploration. In this study, we explored inpatient mental health workers' experiences of support and help-seeking following workplace violence. Four overall themes emerged from interviews with 12 participants: (i) validation as motivation for help-seeking; (ii) stigma as a barrier to help-seeking; (iii) gaps in services provided; and (iv) desire for accessible and effective trauma support and education. This study demonstrates the need for supportive management responses and peer support, access to specialized and confidential trauma-informed mental health services, and reductions in stigma, victim blaming, and other barriers to help-seeking among mental health workers.

Are workplace health promotion programmes effective for all socioeconomic groups? A systematic review.

Decreasing socioeconomic health inequalities is considered an important policy priority in many countries. Workplace health promotion programmes (WHPPs) have shown modest improvements in health behaviour. This systematic review aims to determine the presence and magnitude of socioeconomic differences in effectiveness and the influence of programme characteristics on differential effectiveness of WHPPs. Three electronic databases were searched for systematic reviews published from 2013 onwards and for original studies published from 2015 onwards. We synthesised the reported socioeconomic differences in effectiveness of WHPPs on health behaviours, and calculated effectiveness ratios by dividing the programme effects in the lowest socioeconomic group by the programme effects in the highest socioeconomic group. Thirteen studies with 75 comparisons provided information on the effectiveness of WHPPs across socioeconomic groups. Ten studies with 54 comparisons reported equal effectiveness and one study with 3 comparisons reported higher effectiveness for lower socioeconomic groups. Quantitative information on programme effects was available for six studies with 18 comparisons, of which 13 comparisons showed equal effectiveness and 5 comparisons showed significantly higher effect sizes among workers in low socioeconomic position. The differential effectiveness of WHPPs did not vary across programme characteristics. In this study no indications are found that WHPPs increase socioeconomic inequalities in health behaviour. The limited quantitative information available suggests that WHPPs may contribute to reducing socioeconomic inequalities. Better insight is needed on socioeconomic differences in effectiveness of WHPPs to develop strategies to decrease socioeconomic inequalities in health in the workforce.

Preventing sickness absence among employees with common mental disorders or stress-related symptoms at work: a cluster randomised controlled trial of a problem-solving-based intervention conducted by the Occupational Health Services.

OBJECTIVES: Common mental disorders (CMDs) are among the main causes of sickness absence and can lead to suffering and high costs for individuals, employers and the society. The occupational health service (OHS) can offer work-directed interventions to support employers and employees. The aim of this study was to evaluate the effect on sickness absence and health of a work-directed intervention given by the OHS to employees with CMDs or stress-related symptoms. METHODS: Randomisation was conducted at the OHS consultant level and each consultant was allocated into either giving a brief problem-solving intervention (PSI) or care as usual (CAU). The study group consisted of 100 employees with stress symptoms or CMDs. PSI was highly structured and used a participatory approach, involving both the employee and the employee's manager. CAU was also work-directed but not based on the same theoretical concepts as PSI. Outcomes were assessed at baseline, at 6 and at 12 months. Primary outcome was registered sickness absence during the 1-year follow-up period. Among the secondary outcomes were self-registered sickness absence, return to work (RTW) and mental health. RESULTS: A statistical interaction for group × time was found on the primary outcome (p=0.033) and PSI had almost 15 days less sickness absence during follow-up compared with CAU. Concerning the secondary outcomes, PSI showed an earlier partial RTW and the mental health improved in both groups without significant group differences. CONCLUSION: PSI was effective in reducing sickness absence which was the primary outcome in this study.

Interventions for common mental disorders in the occupational health service: a systematic review with a narrative synthesis.

INTRODUCTION: Common mental disorders (CMD) are leading causes of decreased workability in Sweden and worldwide. Effective interventions to prevent or treat such disorders are important for public health. OBJECTIVE: To synthesize the research literature regarding occupational health service (OHS) interventions targeting prevention or reduction of CMD among employees. The effect on workability (sickness absence, return-to-work and self-reported workability) and on CMD symptoms was evaluated in a narrative analysis. DATA SOURCES: The literature search was performed in four electronic databases in two searches, in 2014 and in 2017. ELIGIBILITY CRITERIA (USING PICO): Population: studies investigating employees at risk or diagnosed with CMD, as well as preventive workplace intervention targeting mental health. INTERVENTION: studies where the recruitment or the intervention was delivered by the OHS or OHS personnel were included. CONTROL: individuals or groups who did not receive the target intervention. OUTCOME: all types of outcomes concerning sickness absence and psychological health were included. Study quality was assessed using a Swedish AMSTAR-based checklist, and results from studies with low or medium risk of bias were narratively synthesized based on effect or absence thereof. RESULTS: Thirty-three studies were included and assessed for risk of bias. Twenty-one studies had low or medium risk of bias. In 18 studies, rehabilitation interventions were evaluated, 11 studies concerned interventions targeting employees at risk for developing CMD and four studies investigated preventive interventions. Work-focused cognitive behavioral therapy and problem-solving skill interventions decreased time to first return-to-work among employees on sick leave for CMD in comparison with treatment-as-usual. However, effect on return to full-time work was not consistent, and these interventions did not consistently improve CMD symptoms. Selective interventions targeting employees at risk of CMD and preventive interventions for employees were heterogeneous, so replication of these studies is necessary to evaluate effect. LIMITATIONS: Other workplace interventions outside the OHS may have been missed by our search. There was considerable heterogeneity in the included studies, and most studies were investigating measures targeting the individual worker. Interventions at the workplace/organizational level were less common. CONCLUSIONS AND IMPLICATION OF KEY FINDINGS: Return-to-work and improvement of CMD symptoms are poorly correlated and should be addressed simultaneously in future interventions. Further, interventions for CMD administered through the occupational health service require further study. Rehabilitative and preventive strategies should be evaluated with scientifically robust methods, to examine the effectiveness of such interventions.

Improving the health of workers with a low socioeconomic position: Intervention Mapping as a useful method for adaptation of the Participatory Approach.

BACKGROUND: Workers with a low socioeconomic position (SEP) have a higher risk for health problems and premature dropout from the workforce. Unfavorable working conditions and unhealthy behaviors are more prevalent among this group of workers. The Participatory Approach (PA), is an evidence-based method to identify and solve problems at the workplace related to health issues of the worker. Health problems among workers with a low SEP are usually caused by an interplay of problems in and outside the workplace. To solve health problems on multiple life domains for workers with a low SEP we aim to adapt this approach to a broader perspective. METHODS: An Intervention Mapping (IM) protocol was used to adapt the PA. First, a needs assessment was conducted combining literature with data from interviews and focus groups with workers with a low SEP, employers and occupational health professionals (OHPs). Based on the needs assessment a program goal and performance and change objectives were defined, which resulted in methods and practical strategies to solve problems on multiple life domains. Based on the results of these steps, the PA was adapted and an implementation and evaluation plan were developed. RESULTS: The needs assessment confirmed that an interplay of problems on multiple life domains affect work functioning and health of workers with a low SEP. Moreover, they perceived difficulties with solving problems or used passive or avoidant coping styles towards these problems. The program goal is to identify and solve problems on multiple life domains that affect healthy functioning at work. To achieve this workers need support from OHPs to solve problems. The PA protocol and materials were adapted using theoretical concepts of the Self-Determination Theory (SDT), which resulted in the Grip on Health intervention. For OHPs a training was developed on how to implement this intervention in practice. The intervention will be evaluated in a pilot implementation study among workers with a low SEP and other relevant stakeholders. CONCLUSIONS: IM was a valuable tool for the adaptation of the PA to better support workers with a low SEP to improve their work functioning and health from a broader perspective.

Impact of a group-based intervention program on physical activity and health-related outcomes in worksite settings.

BACKGROUND: The benefits of physical activity (PA) have been well documented, and the worksite is a promising setting for PA promotion. The aims of this study were as follows: 1. To evaluate the effect of a group-based worksite intervention on PA and health-related outcomes by using pedometers. 2. To examine the associations between the change in vigorous physical activity (VPA)/moderate physical activity (MPA)/walking and health related outcomes. METHODS: A total of 398 participants (221 in the intervention group (IG) and 177 in the control group (CG)) from 17 worksites were recruited for a prospective self-controlled trial of a worksite physical activity intervention program in China. In the IG, a pedometer was utilized to self-monitor the PA, together with group competition, goal setting, and other incentives. No intervention was applied to the CG. Physical activity, sedentary behavior, and health-related outcomes were measured at baseline and immediately after the 100-day period intervention. RESULTS: A total of 262 participants completed the program (68.3% adherence). Adherence in the intervention group was 67.9% (n = 150/221). Improvements between baseline and follow-up among intervention participants were observed in the following parameters: VPA (+ 109.7 METs/week; p < 0.05), walking (+ 209.2 METs/week; p < 0.01), systolic blood pressure (SBP; - 2.1 mmHg; p < 0.01), waist circumference (WC; - 2.3 cm; p < 0.01), body fat percentage (BF); - 1.0%; p < 0.01), and body mass index (BMI; - 0.5 kg/m2; p < 0.01). VPA was related to changes in body fat percentage (p < 0.05) and body mass index (p < 0.05). CONCLUSION: This integrated group-based intervention program contributed to comprehensive improvement in health-related outcomes. The study was useful for establishing associations between change in VPA/MPA/walking and health-related outcomes in a natural setting. Long-term evaluation is required to examine the potential of such an integrated intervention to promote PA. REGISTRATION: This study was prospectively registered in the Chinese Clinical Trial Registry. TRIAL REGISTRATION NUMBER: ChiCTR-1,800,015,529. Date of registration: April 5, 2018.

Cognitive behavioural therapy interventions for insomnia among shift workers: RCT in an occupational health setting.

INTRODUCTION: The aim of the study was to compare the effectiveness of cognitive behavioural therapy interventions for insomnia (CBT-I) to that of a sleep hygiene intervention in a randomized controlled design among shift workers. We also studied whether the features of shift work disorder (SWD) affected the results. METHODS: A total of 83 shift workers with insomnia disorder were partially randomized into a group-based CBT-I, self-help CBT-I, or sleep hygiene control intervention. The outcomes were assessed before and after the interventions and at 6-month follow-up using questionnaires, a sleep diary, and actigraphy. RESULTS: Perceived severity of insomnia, sleep-related dysfunctional beliefs, burnout symptoms, restedness, recovery after a shift, and actigraphy-based total sleep time improved after the interventions, but we found no significant differences between the interventions. Mood symptoms improved only among the group-based CBT-I intervention participants. Non-SWD participants had more mental diseases and symptoms, used more sleep-promoting medication, and had pronounced insomnia severity and more dysfunctional beliefs than those with SWD. After the interventions, non-SWD participants showed more prominent improvements than those with SWD. CONCLUSIONS: Our results showed no significant differences between the sleep improvements of the shift workers in the CBT-I interventions and of those in the sleep hygiene control intervention. Alleviation of mood symptoms seemed to be the main added value of the group-based CBT-I intervention compared to the control intervention. The clinical condition of the non-SWD participants was more severe and these participants benefitted more from the interventions than the SWD participants did. TRIAL REGISTRATION: ClinicalTrials.gov, NCT02523079.

Effectiveness of a progressive resistance exercise program for industrial workers during breaks on perceived fatigue control: a cluster randomized controlled trial.

BACKGROUND: There is strong evidence that physical exercise in the workplace is effective for reducing workers' musculoskeletal complaints. Studies with industrial workers and studies on progressive resistance exercises during breaks are scarce. Our aim was to evaluate the effects of a resistance exercise program on perceived fatigue control among industrial workers. METHODS: 204 employees from the dairy industry were allocated to two groups, the intervention group (IG) (n = 98) and the control group (CG) (n = 106). The primary outcome measures were perceived fatigue control and maximum muscle strength, measured through the Need for Recovery Scale and one-repetition maximum contraction (1-RM), respectively. Secondary outcome measures were musculoskeletal complaints, physical activity level, perceived risk factors, physical fitness (BMI, vital signs, and body fat percentage), and workers´ productivity. All outcomes were assessed at baseline and then again after 4 months. The IG performed resistance exercises using progressively greater loads while the CG performed general exercise using elastic bands. The exercise protocols were performed three times per week for 20 min. An intention-to-treat analysis was performed using the mixed linear model. Results were considered significant when p < 0.05. RESULTS: The IG did not show to be superior to the CG, although both groups improved perceived fatigue control and muscle strength after the resistance physical exercise program in the worplace. There was also no significant difference between the groups for musculoskeletal complaints and other secondary variables analyzed. However, both groups showed significant improvements between baseline and after 4 months of intervention for all evaluated outcomes (p < 0.05). CONCLUSION: The implementation of a progressive resistance exercise program during work breaks for perceived fatigue control was no more effective than exercises using elastic bands. However, resistance exercises during work breaks presented better results on all measured outcomes regardless of the exercise protocol used. TRIAL REGISTRATION: U.S. National Institutes of Health, ClinicalTrials.gov Identifier: NCT02172053. Registered 19 June 2014.

External validation of a prediction model and decision tree for sickness absence due to mental disorders.

PURPOSE: A previously developed prediction model and decision tree were externally validated for their ability to identify occupational health survey participants at increased risk of long-term sickness absence (LTSA) due to mental disorders. METHODS: The study population consisted of N = 3415 employees in mobility services who were invited in 2016 for an occupational health survey, consisting of an online questionnaire measuring the health status and working conditions, followed by a preventive consultation with an occupational health provider (OHP). The survey variables of the previously developed prediction model and decision tree were used for predicting mental LTSA (no = 0, yes = 1) at 1-year follow-up. Discrimination between survey participants with and without mental LTSA was investigated with the area under the receiver operating characteristic curve (AUC). RESULTS: A total of n = 1736 (51%) non-sick-listed employees participated in the survey and 51 (3%) of them had mental LTSA during follow-up. The prediction model discriminated (AUC = 0.700; 95% CI 0.628-0.773) between participants with and without mental LTSA during follow-up. Discrimination by the decision tree (AUC = 0.671; 95% CI 0.589-0.753) did not differ significantly (p = 0.62) from discrimination by the prediction model. CONCLUSION: At external validation, the prediction model and the decision tree both poorly identified occupational health survey participants at increased risk of mental LTSA. OHPs could use the decision tree to determine if mental LTSA risk factors should be explored in the preventive consultation which follows after completing the survey questionnaire.

Development and application of a noise-hazard scheme for road maintainers.

BACKGROUND: Transportation road maintenance and repair workers, or "maintainers," are exposed to hazardous and variable noise levels and often rely on hearing protection devices (HPD) to reduce noise-exposure levels. We aimed to improve upon HPD use as part of the HearWell program that used a Total Worker Health, participatory approach to hearing conservation. METHODS: Full-shift, personal noise sampling was performed during the routine task of brush cutting. Work activities and equipment were recorded and combined with 1-min noise measures to summarize personal noise-exposure levels by equipment. Using noise-monitoring results, HPD noise reduction ratings, and input from worker-based design teams, a noise-hazard scheme was developed and applied to the task and equipment used during brush cutting. RESULTS: Average (standard deviation) and maximum Leq 1-minute, personal noise-exposure levels recorded during brush cutting included chainsaws at 92.1 (7.6) and max of 111 dBA, leaf blowers at 91.2 (7.5) and max 107 dBA, and wood chipper at 90.3 (7.3) and max of 104 dBA. The worker-designed noise-hazard scheme breaks down noise exposures into one of three color bands and exposure ranges: red (over 105 dBA), orange (90-105 dBA), or yellow (85-90 dBA). The scheme simplifies the identification of noise levels, assessment of noise-hazard, and choice of appropriate hearing protection for workers. CONCLUSION: Combining noise-exposure assessment with intervention development using participatory methods, we characterized noise exposure and developed an intervention to educate and assist in protecting workers as they perform noisy tasks.

Experiences and outcomes of nurses referred to a peer health assistance program: Recommendations for nursing management.

AIM: To provide recommendations for nursing management based on the experiences of current and former nurses who were served by a peer health assistance program (PHAP). BACKGROUND: Providing help for nurses with impaired practice is critical to their health and well-being, assuring patient safety and public trust, as well as returning competent nurses to the healthcare workforce. METHODS: Nurses (n = 268) who were current clients or former clients of a PHAP were surveyed about their experiences. RESULTS: Nearly half of nurses were referred by the board of nursing with 69% reporting the referral was due to substance use, alcohol being the most common. Most (62%) did not believe that their substance use affected their practice yet relayed that recognition of their emotional or physical condition could have led to earlier identification. Key barriers to seeking assistance were fear and embarrassment, along with concerns about losing their nursing license. CONCLUSIONS: Nurses in management are in key roles to identify and intervene with nurses who are at risk for impaired practice. IMPLICATIONS FOR NURSING MANAGEMENT: Nurses in management and nurse colleagues would benefit from workplace education on the warning signs of impaired nursing practice and how to address it.

Traumatic stress within disaster-exposed occupations: overview of the literature and suggestions for the management of traumatic stress in the workplace.

BACKGROUND: Many people who experience a disaster will do so as part of an occupational group, either by chance or due to the nature of their role. SOURCES OF DATA: This review is based on literature published in scientific journals. AREAS OF AGREEMENT: There are many social and occupational factors, which affect post-disaster mental health. In particular, effective social support-both during and post-disaster-appears to enhance psychological resilience. AREAS OF CONTROVERSY: There is conflicting evidence regarding the best way to support trauma-exposed employees. Many organisations carry out post-incident debriefing despite evidence that this is unhelpful. GROWING POINTS: Employees who are well supported tend to have better psychological outcomes and as a result may be more likely to perform well at work. AREAS TIMELY FOR DEVELOPING RESEARCH: The development and evaluation of workplace interventions designed to help managers facilitate psychological resilience in their workforce is a priority. Successful interventions could substantially increase resilience and reduce the risk of long-term mental health problems in trauma-exposed employees.

A group randomized control trial to test the efficacy of the Road to Mental Readiness (R2MR) program among Canadian military recruits.

BACKGROUND: Despite increased interest in workplace mental health interventions, the evidence for beneficial effects is mixed. Furthermore, many existing studies lack methodological rigor. We report results from a group randomized control trial to test the efficacy of a vastly popular intervention in Canada, the Road to Mental Readiness (R2MR) program, which has been widely disseminated in military, first responder, and civilian settings. METHODS: The trial took place among Canadian Armed Forces military recruits completing their basic military qualification (BMQ) training, and randomized 65 platoons (N = 2831) into either (a) an Intervention (R2MR at week 2 of BMQ), or (b) a delayed Intervention Control (R2MR at week 9 of BMQ) condition. The principal investigator, participants, and data collection staff were blinded to platoon condition. Individual-level psychological functioning, resilience, mental health service use attitudes, intentions, and behaviours, and additional covariates were assessed with questionnaires around week 2 (a day or two before Intervention platoons received R2MR), at week 5, and at week 9 (a day or two before the Control platoons received R2MR). Military performance outcomes were obtained from administrative databases. RESULTS: The full trial results were mixed; for some outcomes (psychological functioning, resilience, and military performance), we saw no evidence of beneficial effects; where we did see benefits (mental health service use attitudes, intentions, behaviours), the effects were very small, or disappeared over time. Analyses among two subsamples (Group 1: Intervention platoons with a Fidelity Check and their Controls, and Group 2: Intervention platoons without Fidelity Check and their Controls) indicated that for some outcomes (attitudes and help-seeking), under high fidelity conditions, the beneficial effects of R2MR were increased and better sustained; Conversely, under poor fidelity conditions, decreased beneficial effects or even iatrogenic effects were observed. Analyses across three training divisions indicated the larger organizational climate further influences efficacy. CONCLUSIONS: Our findings paint a very complex picture in which it is made evident that sensible, evidence-informed workplace mental health interventions such as R2MR may work under high fidelity conditions, but may yield no discernable benefit or even inadvertent iatrogenic effects if implemented poorly or without sufficient consideration to the larger organizational context. TRIAL REGISTRATION: ISRCTN 52557050 Registered 13 October 2016.

Wellness programme at the workplace promotes dietary change and improves health indicators in a longitudinal retrospective study.

OBJECTIVE: To determine the effectiveness of a workplace wellness programme intervention in improving participants' behaviour towards choosing a healthy diet and the correlation with health indicators. DESIGN: A retrospective cohort study. SETTING: Wellness programme in the Midwest, USA. SUBJECTS: Employees (n 12 636) who participated in a wellness programme for three consecutive years during years 2004 to 2013 and who completed web-based health risk questionnaires. The wellness programme included annual health screening, laboratory measures, health risk questionnaire and personalized health-care programme. Participants' food group intakes, BMI and health indicators were compared between the first and last year of participation. McNemar's non-parametric test was used for paired nominal data. Pearson correlations were computed for paired food and health indicator measurements. Correlations between dietary intake and BMI, cholesterol and TAG were computed using Pearson correlations and McNemar's test. RESULTS: There were negative correlations between intakes of fruits, vegetables, grains, dairy, healthy eating pattern and health outcome indicators such as BMI and TAG levels. Additionally, the percentage of employees who increased their consumption of fruits (16·88 v. 12·08 %, P<0·001), vegetables (15·20 v. 11·44 %, P<0·001) and dark green leafy vegetables (12·03 v. 7·27 %, P 0·001) was significantly higher than the percentage of participants who decreased their intake of these food groups during the third-year follow-up. CONCLUSIONS: The wellness programme improved some health indicator parameters and had a positive impact on increasing participants' intakes of fruits, vegetables and whole grains at the third year of follow-up.

Development of hearing standards for Ontario's Constable Selection System.

Objective: Develop valid and defensible hearing standards for Ontario constables to ensure safe and efficient operations. Design: Research involved three steps: (1) identification of hearing critical (HC) tasks, (2) characterisation of real-world noise environments where these tasks are performed (3) and establishment of screening criteria and protocols for determining fitness for duty. Study sample: Three panels of subject matter experts (SMEs) from different Ontario police services participated in Steps 1 and 3. Result: Fifty-one HC tasks conducted in 25 different environments were identified. Acceptable levels of speech communication in noise were based on environments with the highest frequency, importance and difficulty ratings. The ability to understand soft speech was also deemed critical. These translated into a 2 dB maximum elevation in the Noise Composite speech recognition threshold (SRT) with the Hearing-In-Noise-Test and a threshold in quiet of 35 dBA or better. Conclusions: Speech communication modelling methodology greatly facilitates the task of developing fitness for duty hearing standards, but participation of SMEs is crucial for face validity.