Participatory Ergonomics Intervention to Prevent Work Disability Among Workers with Low Back Pain: A Randomized Clinical Trial in Workplace Setting.

Purpose In order to support people with low back pain (LBP) to stay at work, work arrangements are regarded important. This study aimed to evaluate the effectiveness of a workplace intervention using a participatory approach on work disability of workers with ongoing or recurrent LBP. Methods A total of 107 workers with LBP, with duration of pain for at least two consecutive weeks or recurrent pain of any duration during the last year, were randomized either to the intervention (n = 51) or control group (n = 56). The intervention included arrangements at the workplace, along with individual guidance provided by an occupational physiotherapist (OPT). The randomized intervention study used standard counselling and guidance by an OPT without workplace intervention as a comparison. Surveys were completed at baseline, and 6 and 12 months after baseline. Results There were no statistically significant differences between the intervention and control groups on the primary outcome measure, i.e. self-assessed work ability. We found no between-group differences in perceived health, self-assessed work productivity, number of sickness absence days and severity of back pain. However, there were significant positive within-group changes in the intervention group in the intensity of LBP, perceived health and the number of sickness absence days due to LBP. Conclusion Workplace arrangements are feasible using participatory ergonomics, but more quantitative and qualitative research is needed on its utilization and effectiveness among workers with LBP.

Return to the labour market in schizophrenia and other psychoses: a register-based Northern Finland Birth Cohort 1966 study.

PURPOSE: The prospects and predictors of returning to the labour market after long-term work disability in psychoses are unclear. Our aim was to study the proportion and characteristics of persons with schizophrenia and other psychoses who return to the labour market after receiving a disability pension. METHODS: In this 50-year follow-up study in the Northern Finland Birth Cohort 1966 (NFBC1966), national registers on demographics, care, and disability pensions were used to detect and characterize individuals who had been on a disability pension for psychiatric reasons. We compared individuals with schizophrenia (SZ, n = 223) or other psychoses (OP, n = 200) to those with non-psychotic psychiatric disorders (NP, n = 1815) regarding demographics and end of pension by cross-tabulations and logistic regression. RESULTS: Of the 170 (74%) persons with SZ who had been on disability pension for a psychiatric reason, 15 (9%) returned to the labour market. Corresponding percentages were 19% for OP and 28% for NP. In SZ, being married, a later onset age of psychosis, and better school performance, and in OP and NP, having children predicted returning to the labour market. In all groups, a shorter length of the latest disability pension associated with returning to the labour market. CONCLUSION: Although rare, it is possible to return to the labour market after a disability pension due to psychosis. Factors predicting a return to the labour market could be taken into account when planning rehabilitation.

Co-operation in the prevention of work disability due to musculoskeletal disorders: A cross-sectional study among occupational health professionals in Finland.

BACKGROUND: Occupational health service (OHS) providers and their client organizations are obligated to collaborate in promoting health and work ability. Little is known how this multiprofessional co-operation is implemented in relation to the prevention of musculoskeletal disorders (MSD). OBJECTIVE: The aim of this study was to investigate the working practices of co-operation among OHS professionals, and between the OHSs and workplaces. METHODS: In 2015 a web-based questionnaire was sent to 3900 OHS professionals in Finland. A total of 589 responded: 106 physicians, 322 nurses, 134 physiotherapists and 27 psychologists. RESULTS: The co-operation within OHS personnel was regarded to strengthen the processes to promote work ability of workers with MSD. Despite the positive expectations of co-operation, there is a problem of having enough time to put good ideas into practice. Four main possibilities to develop co-operation were identified: creating proactive working models with defined roles; increasing awareness of importance of early intervention models; implementing the principles of good OH practice; and adopting the knowledge of the latest information to promote work ability. CONCLUSIONS: Despite its recognized importance, co-operation both with OHS colleagues and with the workplaces was not always optimal. There is a need for defined roles and common proactive working models between each stakeholder for more effective co-operation.

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

In the original publication of the article, the first name and last name of the authors were interchanged.

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.

Sustained return to work and work participation after a new legislation obligating employers to notify prolonged sickness absence.

AIMS: Return to work (RTW) after prolonged sickness absence benefits both the individual and society. However, the effectiveness of legislation aiming to improve RTW remains uncertain. We examined whether sustained RTW and work participation were different before and after a legislative change enacted in 2012 (i.e. an intervention) that obligated employers to give notice of prolonged sickness absence to occupational health services. METHODS: Two random samples (2010 and 2013) of the Finnish working aged population (70%, ~2.6 million each) were drawn. Using survival analysis, we assessed sustained RTW (≥28 consecutive working days) during a two-month follow-up after a sickness absence minimum of 30 calendar days in the pre- and post-intervention period. We also identified pathways for RTW with cluster analysis and calculated relative gain in work participation in the total sample and by several population subgroups. RESULTS: In the total sample, sustained RTW was 4% higher and the mean time to sustained RTW was 0.42 days shorter in the post- than in the pre-intervention period. The estimates were larger among women than men and among those with mental disorders compared with other diagnoses. Changes in the pathways for sustained RTW indicated a 4.9% relative gain in work participation in the total sample. The gain was larger among those who lived in areas of low unemployment rate (20.6%) or worked in the public sector (11.9%). CONCLUSIONS: From 2010 to 2013, RTW and work participation increased among the employees with prolonged sickness absence, suggesting that the legislative change enhanced RTW. The change in work participation varied by population subgroup.

Legislative change enabling use of early part-time sick leave enhanced return to work and work participation in Finland.

Objectives The aim of the study was to assess the effectiveness of the use of part-time sick leave at the early (first 12 weeks) stage of work disability due to mental disorder or musculoskeletal disease on sustained return to work (RTW) and overall work participation. Methods In a nation-wide register-based quasi-experimental study, we compared sustained RTW (ie, ≥28 consecutive days at work) and 2-year work participation between the part- and full-time sickness absence (SA) benefit groups (N=1878 in each group) using propensity-score matching. Persons who received partial or full SA benefit due to musculoskeletal diseases or mental disorders between January 1, 2010 and December 31, 2011 were eligible as cases or controls, respectively. Results A higher proportion showed sustained RTW after part- compared to full-time sick leave [absolute risk difference 8.0%, 95% confidence interval (95% CI) 5.3-10.9]. Moreover, the proportion of time at work was at a 10.5% higher level in the part- compared to full-time sick leave group. The prevalence of full disability retirement was almost three-fold among the full- compared to part-time sick leave group, whereas partial disability retirement was 4.5-fold more prevalent in the part- compared to full-time sick leave group. Conclusions The use of part-time sick leave during the first three months of SA enhances RTW and overall work participation during two years among persons with mental disorders and musculoskeletal diseases. The prescription of part-time sick leave can be recommended at an early stage of work disability.

Preventing Sickness Absence With Career Management Intervention: A Randomized Controlled Field Trial.

This study examined whether a group intervention focusing on building up preparedness for career management can prevent future sickness absence.Register-based data on the number of sickness absence days and sickness absence episodes were examined as outcomes of the intervention among 684 employees in 17 organizations in a randomized controlled trial. Sickness absence data were collected covering a period from 1 year before (baseline) to approximately 2 years after the intervention (follow-up). The data were analyzed using zero-inflated negative binomial models.After controlling for baseline absence, age, gender, and organization, the intervention was effective in decreasing the number of longer sickness absences (lasting longer than > 2 weeks), but no other significant effects were found.These findings point out that it is feasible to use a career management intervention to prevent future sickness absence in work organizations.

Occupational Physicians' Reasoning about Recommending Early Return to Work with Work Modifications.

Previous research indicates that work modifications can effectively enhance return to work (RTW) at an early stage of work disability. We aimed to examine how occupational physicians (OPs) reason about recommending early return to work (RTW) with work modifications. Pre-defined propositions regarding the use of work modifications in promoting early RTW were discussed in four focus groups with altogether 11 Finnish OPs. Discussions were audio recorded, and the transcribed data were analyzed using qualitative content analysis. Five different rationales for supporting early RTW were identified: to manage medical conditions, to enhance employee well-being, to help workplace stakeholders, to reduce costs to society, and to enhance OP's own professional fulfillment. However, OPs identified situations and conditions in which early RTW may not be suitable. In addition, there were differences between the OPs in the interpretation of the rationales, suggesting variation in clinical practice. In conclusion, encouraging early RTW with work modifications was perceived by OPs as a meaningful task and, to a large extent, beneficial for employees and several stakeholders. However, this practice was not accepted without consideration to the RTW situation and context. If early RTW and work modifications are to be promoted, OPs should be offered education that addresses their views regarding this practice.

Efficacy of temporary work modifications on disability related to musculoskeletal pain or depressive symptoms--study protocol for a controlled trial.

INTRODUCTION: Previous research suggests that work with a suitable workload may promote health and work retention in people with disability. This study will examine whether temporary work modifications at the early stage of work disability are effective in enhancing return to work (RTW) or staying at work among workers with musculoskeletal or depressive symptoms. METHODS AND ANALYSIS: A single-centre controlled trial with modified stepped wedge design will be carried out in eight enterprises and their occupational health services (OHSs) in nine cities in Finland. Patients seeking medical advice due to musculoskeletal pain (≥4 on a scale from 0-10) or depressive symptoms (≥1 positive response to 2 screening questions) and fulfilling other inclusion criteria are eligible. The study involves an educational intervention among occupational physicians to enhance the initiation of work modifications. Primary outcomes are sustained RTW (≥4 weeks at work without a new sickness absence (SA)) and the total number of SA days during a 12-month follow-up. Secondary outcomes are intensity of musculoskeletal pain (scale 0-10), pain interference with work or sleep (scale 0-10) and severity of depressive symptoms (Patient Health Questionnaire, PHQ-9), inquired via online questionnaires at baseline and 3, 6, 9 and 12 months after recruitment. Information on SA days will be collected from the medical records of the OHSs over 12 months, before and after recruitment. The findings will give new information about the possibilities of training physicians to initiate work modifications and their effects on RTW in employees with work disability due to musculoskeletal pain or depressive symptoms. ETHICS AND DISSEMINATION: The Coordinating Ethics Committee of Hospital District of Helsinki and Uusimaa has granted approval for this study. The results will be published in peer-reviewed journals. TRIAL REGISTRATION NUMBER: ISRCTN74743666.

Health-related effects of early part-time sick leave due to musculoskeletal disorders: a randomized controlled trial.

OBJECTIVE: Previously we reported that early part-time sick leave enhances return to work (RTW) among employees with musculoskeletal disorders (MSD). This paper assesses the health-related effects of this intervention. METHODS: Patients aged 18-60 years who were unable to perform their regular work due to MSD were randomized to part- or full-time sick leave groups. In the former, workload was reduced by halving working time. Using validated questionnaires, we assessed pain intensity and interference with work and sleep, region-specific disability due to MSD, self-rated general health, health-related quality of life (measured via EuroQol), productivity loss, depression, and sleep disturbance at baseline, 1, 3, 8, 12, and 52 weeks. We analyzed the repeated measures data (171-356 observations) with the generalized estimating equation approach. RESULTS: The intervention (part-time sick leave) and control (full-time sick leave) groups did not differ with regard to pain intensity, pain interference with work and sleep, region-specific disability, productivity loss, depression, or sleep disturbance. The intervention group reported better self-rated general health (adjusted P=0.07) and health-related quality of life (adjusted P=0.02) than the control group. In subgroup analyses, the intervention was more effective among the patients whose current problem began occurring <6 weeks before baseline and those with ≤30% productivity loss at baseline. CONCLUSIONS: Our findings showed that part-time sick leave did not exacerbate pain-related symptoms and functional disability, but improved self-rated general health and health-related quality of life in the early stage of work disability due to MSD.

Proper manual handling techniques to prevent low back pain, a Cochrane systematic review.

Training and provision of assistive devices are considered major interventions to prevent and treat low back pain (LBP) among workers exposed to manual material handling (MMH). To establish the effectiveness of training and provision of assistive devices in preventing and treating LBP an update of a Cochrane literature review was performed to November 2010. Randomised controlled trials (RCTs) and cohort studies with a concurrent control group (CCTs) were included. Nine RCTs (20.101 employees) and nine CCTs (1280 employees) were included for prevention: six more than in the previous version. No study on treatment was found. None of the included RCTs and CCTs provided evidence that training and provision of assistive devices prevented LBP when compared to no intervention or another intervention.

Return to work after early part-time sick leave due to musculoskeletal disorders: a randomized controlled trial.

OBJECTIVES: The purpose of this study was to assess the effects of early part-time sick leave on return to work (RTW) and sickness absence among patients with musculoskeletal disorders. METHODS: A randomized controlled trial was conducted in six occupational health units of medium- and large-size enterprises. Patients aged 18-60 years with musculoskeletal disorders (N=63) unable to perform their regular work were randomly allocated to part- or full-time sick leave. In the former group, workload was reduced by restricting work time by about a half. Remaining work tasks were modified when necessary, as specified in a "fit note" from the physician. The main outcomes were time to return to regular work activities and sickness absence during 12-month follow-up. RESULTS: Time to RTW sustained for ≥4 weeks was shorter in the intervention group (median 12 versus 20 days, P=0.10). Hazard ratio of RTW adjusted for age was 1.60 [95% confidence interval (95% CI) 0.98-2.63] and 1.76 (95% CI 1.21-2.56) after further adjustment for pain interference with sleep and previous sickness absence at baseline. Total sickness absence during the 12-month follow-up was about 20% lower in the intervention than the control group. Compliance with the intervention was high with no discontinuations of part-time sick leave due to musculoskeletal reasons. CONCLUSIONS: Early part-time sick leave may provide a faster and more sustainable return to regular duties than full-time sick leave among patients with musculoskeletal disorders. This is the first study to show that work participation can be safely increased with early part-time sick leave.

Manual material handling advice and assistive devices for preventing and treating back pain in workers.

BACKGROUND: Training and the provision of assistive devices are considered major interventions to prevent back pain and its related disability among workers exposed to manual material handling (MMH). OBJECTIVES: To determine the effectiveness of MMH advice and training and the provision of assistive devices in preventing and treating back pain. SEARCH STRATEGY: We searched CENTRAL (The Cochrane Library 2011, issue 1), MEDLINE, EMBASE, CINAHL, Nioshtic, CISdoc, Science Citation Index, and PsychLIT to February 2011. SELECTION CRITERIA: We included randomised controlled trials (RCT) and cohort studies with a concurrent control group that were aimed at changing human behaviour in MMH and measured back pain, back pain-related disability or sickness absence. DATA COLLECTION AND ANALYSIS: Two authors independently extracted the data and assessed the risk of bias using the criteria recommended by the Cochrane Back Review Group for RCTs and MINORS for the cohort studies.We based the results and conclusions on the analysis of RCTs only. We compared these with the results from cohort studies. MAIN RESULTS: We included nine RCTs (20,101 employees) and nine cohort studies (1280 employees) on the prevention of back pain in this updated review. Studies compared training to no intervention (4), professional education (2), a video (3), use of a back belt (3) or exercise (2). Other studies compared training plus lifting aids to no intervention (3) and to training only (1). The intensity of training ranged from a single educational session to very extensive personal biofeedback.Six RCTs had a high risk of bias.None of the included studies showed evidence of a preventive effect of training on back pain.There was moderate quality evidence from seven RCTs (19,317 employees) that those who received training reported levels of back pain similar to those who received no intervention, with an odds ratio of 1.17 (95% confidence intervals (CI) 0.68 to 2.02) or minor advice (video), with a relative risk of 0.93 (95% CI 0.69 to 1.25). Confidence intervals around the effect estimates were still wide due to the adjustment for the design effect of clustered studies.The results of the cohort studies were similar to those of the randomised studies. AUTHORS' CONCLUSIONS: There is moderate quality evidence that MMH advice and training with or without assistive devices does not prevent back pain or back pain-related disability when compared to no intervention or alternative interventions. There is no evidence available from RCTs for the effectiveness of MMH advice and training or MMH assistive devices for treating back pain. More high quality studies could further reduce the remaining uncertainty.

The effect of workplace intervention on pain and sickness absence caused by upper-extremity musculoskeletal disorders.

OBJECTIVES: The aim of this study was to assess the effect of an ergonomic intervention on pain and sickness absence caused by upper-extremity musculoskeletal disorders. METHODS: In this randomized controlled study, subjects aged 18-60 years (N=177) seeking medical advice due to upper-extremity symptoms were included if their symptoms, or the exacerbation of symptoms, had started <30 days prior to the medical consultation and immediate sick leave was not required. Workplace ergonomic improvements were made in the intervention group. Data on symptoms and sickness absences were gathered during one-year follow-up. RESULTS: Pain intensity, pain interference with work, leisure time, or sleep did not differ between the intervention and control group during the one-year follow-up. During the first three months of follow-up, the percentage of employees with sickness absence due to upper-extremity or other musculoskeletal disorders did not differ between the intervention (N=89) and control (N=84) group, but the total number of sickness absence days in the intervention group was about half of that in the control group (mean 6.2 versus 9.8 days for upper-extremity disorder and 6.0 versus 11.5 days for upper-extremity and other musculoskeletal disorders combined). During 4-12 months of follow-up, the percentage of employees with sickness absence due to upper-extremity disorder (10.1% versus 16.7%, P=0.20) or upper-extremity and other musculoskeletal disorders combined (20.2% versus 32.1%, P=0.07) was lower in the intervention than the control group. CONCLUSIONS: Our findings suggest that an early ergonomic intervention reduces sickness absence due to upper-extremity or other musculoskeletal disorders.

Two Legionnaires' disease cases associated with industrial waste water treatment plants: a case report.

BACKGROUND: Finnish and Swedish waste water systems used by the forest industry were found to be exceptionally heavily contaminated with legionellae in 2005. CASE PRESENTATION: We report two cases of severe pneumonia in employees working at two separate mills in Finland in 2006. Legionella serological and urinary antigen tests were used to diagnose Legionnaires' disease in the symptomatic employees, who had worked at, or close to, waste water treatment plants. Since the findings indicated a Legionella infection, the waste water and home water systems were studied in more detail. The antibody response and Legionella urinary antigen finding of Case A indicated that the infection had been caused by Legionella pneumophila serogroup 1. Case A had been exposed to legionellae while installing a pump into a post-clarification basin at the waste water treatment plant of mill A. Both the water and sludge in the basin contained high concentrations of Legionella pneumophila serogroup 1, in addition to serogroups 3 and 13. Case B was working 200 meters downwind from a waste water treatment plant, which had an active sludge basin and cooling towers. The antibody response indicated that his disease was due to Legionella pneumophila serogroup 2. The cooling tower was the only site at the waste water treatment plant yielding that serogroup, though water in the active sludge basin yielded abundant growth of Legionella pneumophila serogroup 5 and Legionella rubrilucens. Both workers recovered from the disease. CONCLUSION: These are the first reported cases of Legionnaires' disease in Finland associated with industrial waste water systems.

Effectiveness of an ergonomic intervention on the productivity of workers with upper-extremity disorders--a randomized controlled trial.

OBJECTIVES: The aim of this study was to investigate the effectiveness of an ergonomic intervention on productivity loss at work caused by upper-extremity disorders (UED). METHODS: Workers with medically verified UED were invited to participate. The intervention consisted of a physician contacting the worker's supervisor and an occupational physiotherapist conducting an ergonomic assessment at the worksite. Before and after the intervention, the employees self-assessed UED-related productivity loss (ie, decreased quality and quantity of the daily work output). We tested for differences between groups at 8 and sub-sequently 12 weeks. We also applied generalized estimating equation (GEE) to analyze repeated measures data. RESULTS: Altogether 177 employees were randomized. The overall participation rate was 88%. At baseline, 54% of the intervention group and 58% of the control group reported productivity loss. The magnitude of productivity loss was 17% and 20%, respectively. At 8 weeks, both the proportion and magnitude of productivity loss were lower in the intervention than the control group, but the differences were statistically significant only at 12 weeks (proportion 25% versus 51%, magnitude 7% versus 18%, P=0.001 for both). Using GEE analyses, we also found the differences to be statistically significant (proportion 38% versus 52%, magnitude 12% versus 18%). The intervention only benefitted employees with 0-20% loss of productivity at baseline, not those with a higher initial productivity loss. CONCLUSIONS: Early ergonomic intervention, in addition to adequate medical care, is effective in preventing and restoring self-reported productivity loss associated with UED.

Self-reported productivity loss among workers with upper extremity disorders.

OBJECTIVE: Upper extremity disorders (UED) are prevalent in working populations. This study investigates the prevalence, magnitude, and associated factors of on-the-job productivity loss among workers with UED. METHODS: Workers with incipient upper extremity symptoms were invited to participate in our study after the disorder was verified by a physician and no immediate sick leave was required. Of the 177 eligible patients, 168 (95%) were included in the study. They were asked to describe their symptoms, personal characteristics, and work-related factors. Self-assessed productivity measured the impact of UED on the achieved work output. RESULTS: Of the 168 participants, 56% reported a productivity loss; the average reduction thereof was 34%. Productivity loss was associated with pain intensity [odds ratio (OR) for the third tertile 2.8, 95% confidence interval (95% CI) 1.2-6.5], pain interference with work (OR for the third tertile 5.7, 95% CI 2.2-14.3) and fear-avoidance beliefs (OR 2.8, 95% CI 0.9-8.9). Pain interference with sleep was associated with productivity loss only among those aged 46 years or older, whereas high job strain showed an association with productivity loss only among workers aged 20-45 years. In the younger group, productivity loss was more associated with a combination of any two of the following three factors than the presence of only one: pain intensity, job strain, and physical loads at work. CONCLUSIONS: UED cause substantial loss of productivity at work. The most important associated factors are related to pain and its impact on work and sleep, but also to psychological aspects of pain and work. Our findings suggest that the factors associated with productivity loss differ in younger and older workers.

Partial sick leave--review of its use, effects and feasibility in the Nordic countries.

Partial sick leave and partial sickness benefits are currently available in Sweden, Norway, Denmark, and Finland. The literature was reviewed to determine their use, describe their recipients, find evidence of their effects, and explore attitudes towards and experiences with their use. Eight databases were searched. National sickness absence statistics and other relevant sources were also reviewed. Of the sickness benefits, partial benefits accounted for approximately one-fifth in Norway, less than 10% in Denmark, and over a third in Sweden. In Finland, partial sick leave was seldom used during the first year (2007) of benefit availability. Few peer-reviewed studies on its effects were identified, and scientific evidence was scarce. Its acceptance was good in all four countries. Most of the recipients were women and over 45 years of age. Studies of its feasibility seem congruent in reporting hindrances due to inflexible work arrangements and poor collaboration between actors. More research and more rigorous study designs are needed to determine whether partial sick leave is feasible and beneficial in keeping those with reduced work ability in worklife.