The relationship among computer work, environmental design, and musculoskeletal and visual discomfort: examining the moderating role of supervisory relations and co-worker support.

PURPOSE: The prevalence of work-related upper extremity musculoskeletal disorders and visual symptoms reported in the USA has increased dramatically during the past two decades. This study examined the factors of computer use, workspace design, psychosocial factors, and organizational ergonomics resources on musculoskeletal and visual discomfort and their impact on the safety and health of computer work employees. METHODS: A large-scale, cross-sectional survey was administered to a US manufacturing company to investigate these relationships (n = 1259). Associations between these study variables were tested along with moderating effects framed within a conceptual model. RESULTS: Significant relationships were found between computer use and psychosocial factors of co-worker support and supervisory relations with visual and musculoskeletal discomfort. Co-worker support was found to be significantly related to reports of eyestrain, headaches, and musculoskeletal discomfort. Supervisor relations partially moderated the relationship between workspace design satisfaction and visual and musculoskeletal discomfort. CONCLUSION: This study provides guidance for developing systematic, preventive measures and recommendations in designing office ergonomics interventions with the goal of reducing musculoskeletal and visual discomfort while enhancing office and computer workers' performance and safety.

Defining the methodological challenges and opportunities for an effective science of sociotechnical systems and safety.

An important part of the application of sociotechnical systems theory (STS) is the development of methods, tools and techniques to assess human factors and ergonomics workplace requirements. We focus in this paper on describing and evaluating current STS methods for workplace safety, as well as outlining a set of six case studies covering the application of these methods to a range of safety contexts. We also describe an evaluation of the methods in terms of ratings of their ability to address a set of theoretical and practical questions (e.g. the degree to which methods capture static/dynamic aspects of tasks and interactions between system levels). The outcomes from the evaluation highlight a set of gaps relating to the coverage and applicability of current methods for STS and safety (e.g. coverage of external influences on system functioning; method usability). The final sections of the paper describe a set of future challenges, as well as some practical suggestions for tackling these. PRACTITIONER SUMMARY: We provide an up-to-date review of STS methods, a set of case studies illustrating their use and an evaluation of their strengths and weaknesses. The paper concludes with a 'roadmap' for future work.

Editorial: emerging issues in sociotechnical systems thinking and workplace safety.

The burden of on-the-job accidents and fatalities and the harm of associated human suffering continue to present an important challenge for safety researchers and practitioners. While significant improvements have been achieved in recent decades, the workplace accident rate remains unacceptably high. This has spurred interest in the development of novel research approaches, with particular interest in the systemic influences of social/organisational and technological factors. In response, the Hopkinton Conference on Sociotechnical Systems and Safety was organised to assess the current state of knowledge in the area and to identify research priorities. Over the course of several months prior to the conference, leading international experts drafted collaborative, state-of-the-art reviews covering various aspects of sociotechnical systems and safety. These papers, presented in this special issue, cover topics ranging from the identification of key concepts and definitions to sociotechnical characteristics of safe and unsafe organisations. This paper provides an overview of the conference and introduces key themes and topics. PRACTITIONER SUMMARY: Sociotechnical approaches to workplace safety are intended to draw practitioners' attention to the critical influence that systemic social/organisational and technological factors exert on safety-relevant outcomes. This paper introduces major themes addressed in the Hopkinton Conference within the context of current workplace safety research and practice challenges.

Sociotechnical approaches to workplace safety: Research needs and opportunities.

The sociotechnical systems perspective offers intriguing and potentially valuable insights into problems associated with workplace safety. While formal sociotechnical systems thinking originated in the 1950s, its application to the analysis and design of sustainable, safe working environments has not been fully developed. To that end, a Hopkinton Conference was organised to review and summarise the state of knowledge in the area and to identify research priorities. A group of 26 international experts produced collaborative articles for this special issue of Ergonomics, and each focused on examining a key conceptual, methodological and/or theoretical issue associated with sociotechnical systems and safety. In this concluding paper, we describe the major conference themes and recommendations. These are organised into six topic areas: (1) Concepts, definitions and frameworks, (2) defining research methodologies, (3) modelling and simulation, (4) communications and decision-making, (5) sociotechnical attributes of safe and unsafe systems and (6) potential future research directions for sociotechnical systems research. PRACTITIONER SUMMARY: Sociotechnical complexity, a characteristic of many contemporary work environments, presents potential safety risks that traditional approaches to workplace safety may not adequately address. In this paper, we summarise the investigations of a group of international researchers into questions associated with the application of sociotechnical systems thinking to improve worker safety.

Work from home: Facilitators for an effective ergonomic work system.

Previous studies on Human Factors and Ergonomics (HFE) have primarily examined the impact of Work-From-Home (WFH) on worker health and well-being, yet little research has examined the optimal implementation process of WFH programs. Work systems perspective suggests that organizational policies, leadership, and psychological factors collectively influence the success of organizational change efforts. Our study explored the roles of managerial/supervisory, psychological, and organizational policy factors in facilitating the relationship between employees' HFE awareness and their acceptance and satisfaction with the WFH arrangement. Using data from 3195 knowledge workers in the US who use computers as their primary work tool and have worked from home at least one day in the past 30 days, we employed structural equation modeling to test our hypotheses. Transformational HFE leadership and employees' general self-efficacy are pivotal in implementing ergonomic WFH arrangements. The combination of employees' HFE awareness, transformational HFE leadership, and adequate levels of self-efficacy may foster positive process outcomes (e.g., readiness for WFH arrangement, workspace design satisfaction) in WFH arrangements. Efforts that are coordinated across organizational levels determine the effectiveness of organizational change.

Ergonomic Maturity Model: A tool for integrating ergonomics/human factors into organizations.

BACKGROUND: Currently, there is a need for models, methods, and tools that allow ergonomics/human factor (E/HF) practitioners to assess the level of E/HF integration into organizations from a macroergonomics perspective. OBJECTIVE: This paper aims to propose the Ergonomic Maturity Model (EMM) and the tools for its application as a framework for integrating E/HF in organizations. METHODS: The EMM is a macroergonomic tool that allows stakeholders to evaluate the degree of development and integration of E/HF in the organization based on a participatory and macroergonomic approach. The EMM classifies organizations into five gradual levels of maturity: Ignorance, Understanding, Experimentation, Regular use, and Innovation. RESULTS: In this paper, we provide a three-stage procedure for guiding the application of the EMM: preparation of the evaluation, evaluation, and improvement plan and implementation. We include four tools developed specifically for applying EMM in organizations: evaluation matrix, weighting questionnaire, quick questionnaire, and prioritization matrix. Also, we present a Colombian floriculture company's case study to exemplify the use of the EMM. CONCLUSIONS: The EMM provides a framework for integrating E/HF into organizations from the macroergonomics approach. E/HF practitioners can find in the EMM a tool to help them channel the actions taken by the different organizational actors to improve the safety, health, well-being, and performance of work systems. Finally, it should be noted that further studies on the reliability and validity of the EMM are needed, which would contribute to demonstrating that the EMM can effectively and successfully guide change in E/HF maturity levels in organizations.

Virtual office intervention effectiveness: A systems approach.

BACKGROUND: Virtual office work, or telework/remote work, has existed since the 1970s due to the widespread availability of new technologies. Despite a dramatic increase in remote office work, few studies have examined its long-term effects on work environments and worker well-being. OBJECTIVE: A prospective field intervention study was undertaken to examine the effects of a Virtual Office program on office workers' psychosocial perceptions, mental and physical well-being, workplace satisfaction, and performance. METHOD: A large public service organization undertook a 12-month Virtual Office (VO) pilot program using a systems approach. The study included 137 VO employees (intervention condition), and 85 Conventional Office (CO) employees (control condition). The VO intervention used a work system approach consisting of establishing a steering committee, training programs, and VO resource website. Employee survey measures and follow-up focus group observations were used to examine the impact of the VO intervention. RESULTS: Virtual office participants reported higher job control, group interactions and cohesiveness, and quality of supervision than the CO participants. VO participants reported lower upper body musculoskeletal symptoms and physical/mental stress than CO participants. VO participants reported higher performance (customer satisfaction) than the CO participants. CONCLUSION: The study findings were sufficiently positive to provide a basis for work organizations to undertake similar pilot programs. Consideration of work system factors when designing an effective VO program can benefit employee's well-being and performance. The rationale for implementing VO programs is underscored by the current COVID-19 pandemic. VO work will continue to some degree for the foreseeable future.

Assessment of organizational readiness for participatory occupational safety, health and well-being programs.

BACKGROUND: Organizational readiness for change measures were reviewed to develop an assessment tool for guiding implementation of an occupational safety and health program based on Total Worker Health (TWH) principles. Considerable conceptual ambiguity in the theoretical and empirical peer-reviewed literature was revealed. OBJECTIVE: Develop and validate an assessment tool that organizations can use to prepare for implementation of a participatory TWH program. METHODS: Inclusion criteria identified 29 relevant publications. Analysis revealed eight key organizational characteristics and predictors of successful organizational change. A conceptual framework was created that subject matter experts used to generate prospective survey items. Items were revised after pretesting with 10 cognitive interviews with upper-level management and pilot-tested in five healthcare organizations. Reliability of the domain subscales were tested based on Cronbach's α. RESULTS: The Organizational Readiness Tool (ORT) showed adequate psychometric properties and specificity in these eight domains: 1) Current safety/health/well-being programs; 2) Current organizational approaches to safety/health/well-being; 3) Resources available for safety/health/well-being; 4) Resources and readiness for change initiatives to improve safety/health/well-being; 5) Resources and readiness for use of teams in programmatic initiatives; 6) Teamwork; 7) Resources and readiness for employee participation; and 8) Management communication about safety/health/well-being. Acceptable ranges of internal consistency statistics for the domain subscales were observed. CONCLUSIONS: A conceptual model of organizational readiness for change guided development of the Organizational Readiness Tool (ORT), a survey instrument designed to provide actionable guidance for implementing a participatory TWH program. Initial internal consistency was demonstrated following administration at multiple organizations prior to implementation of a participatory Total Worker Health® program.

A mixed-method approach to tailor the implementation of a participatory Total Worker Health® program.

Purpose ­: Total Worker Health® (TWH) programs, which represent a holistic approach for advancing worker safety, health and well-being, require an employer to adapt programmatic coordination and employee involvement in program design and delivery. Organizational readiness for such measures requires competencies in leadership, communication, subject expertise and worker participation. In the absence of documented methods for TWH readiness assessment, the authors developed a process to prospectively identify implementation facilitators and barriers that may be used to strengthen organizational competencies and optimize the organizational "fit" in advance. Design/methodology/approach ­: The mixed-method baseline assessment instruments comprised an online organizational readiness survey and a key leader interview; these were administered with key organizational and labor leaders in five US healthcare facilities. Findings about organizational resources, skills available and potential implementation barriers were summarized in a stakeholder feedback report and used to strengthen readiness and tailor implementation to the organizational context. Findings ­: The research team was able to leverage organizational strengths such as leaders' commitment and willingness to address nontraditional safety topics to establish new worker-led design teams. Information about program barriers (staff time and communication) enabled the research team to respond with proactive tailoring strategies such as training on participant roles, extending team recruitment time and providing program communication tools and coaching. Originality/value ­: A new method has been developed for prospective organizational readiness assessment to implement a participatory TWH program. The authors illustrate its ability to identify relevant organizational features to guide institutional preparation and tailor program implementation.

Daily self-reports resulted in information bias when assessing exposure duration to computer use.

BACKGROUND: Self-reported exposure duration to computer use is widely used in exposure assessment, and this study examined the associated information bias in a repeated measures setting. METHODS: For 3 weeks, 30 undergraduate students reported daily cumulative computer-use duration and musculoskeletal symptoms at four random times per day. Usage-monitor software installed onto participant's personal computers provided the reference measure. We compared daily self-reported and software-recorded duration, and modeled the effect of musculoskeletal symptoms on observed differences. RESULTS: The relationships between daily self-reported and software-recorded computer-use duration varied greatly across subject with Spearman's correlations ranging from -0.22 to 0.8. Self-reports generally overestimated computer use when software-recorded durations were less than 3.6 hr, and underestimated when above 3.6 hr. Experiencing symptoms was related to a 0.15-hr increase in self-reported duration after controlling for software-recorded duration. CONCLUSIONS: Daily self-reported computer-use duration had a weak-to-moderate correlation with software-recorded duration, and their relationship changed slightly with musculoskeletal symptoms. Self-reports resulted in both non-differential and differential information bias.

The effect of sit-stand desks on office worker behavioral and health outcomes: A scoping review.

This scoping review examines the effects of sit-stand desks (SSDs) on six domains: behavior (e.g. time sitting and standing), physiological, work performance, psychological, discomfort, and posture. Fifty-three articles met criteria. We determined the percentage of significant results for each domain. Forty-seven studies were experimental trials. Sample sizes ranged from six to 231 participants. Follow-up time-frames ranged from one day to one year. Sixty-one percent of behavioral (24 studies), 37% of physiological (28 studies), 7% of work performance (23 studies), 31% of psychological (11 studies), 43% of discomfort (22 studies), and 18% of posture domain results (4 studies) were significant. We conclude that SSDs effectively change behaviors, but these changes only mildly effect health outcomes. SSDs seem most effective for discomfort and least for productivity. Further study is needed to examine long-term effects, and to determine clinically appropriate dosage and workstation setup.

Flexible workspace design and ergonomics training: impacts on the psychosocial work environment, musculoskeletal health, and work effectiveness among knowledge workers.

A macroergonomics intervention consisting of flexible workspace design and ergonomics training was conducted to examine the effects on psychosocial work environment, musculoskeletal health, and work effectiveness in a computer-based office setting. Knowledge workers were assigned to one of four conditions: flexible workspace (n=121), ergonomics training (n=92), flexible workspace+ergonomics training (n=31), and a no-intervention control (n=45). Outcome measures were collected 2 months prior to the intervention and 3 and 6 months post-intervention. Overall, the study results indicated positive, significant effects on the outcome variables for the two intervention groups compared to the control group, including work-related musculoskeletal discomfort, job control, environmental satisfaction, sense of community, ergonomic climate, communication and collaboration, and business process efficiency (time and costs). However, attrition of workers in the ergonomics training condition precluded an evaluation of the effects of this intervention. This study suggests that a macroergonomics intervention is effective among knowledge workers in office settings.

A sociotechnical systems approach to enhance safety climate in the trucking industry: Results of an in-depth investigation.

The purpose of this study was to develop a methodology that extends safety climate beyond an overall score by using the framework of macroergonomics to examine the entire system in a more comprehensive manner. The study is discussed in two papers: one paper describes the study methodology in detail (Murphy, Robertson, Huang, Jeffries, & Dainoff, in press), and the current paper describes the results of the study. Multiple methods were combined to create a systems approach, and those methods include the critical incident technique, contextual inquiries with functional role diagrams, and affinity mapping. Key informants in the trucking industry identified 19 themes that affect safety. The themes ranged from balancing work and family/personal time, the company's policy vs. practice, respecting the job of the driver, and active listening and meaningful feedback. The most prominent themes were related to the workers and their activities; the internal environment, including psychosocial job design elements; and organizational design. Such information can be used to design interventions to change the safety climate of an organization in order to reduce negative safety outcomes.

A sociotechnical systems approach to enhance safety climate in the trucking industry: Development of a methodology.

The systems approach is increasingly used as a framework within which to examine safety climate. Utilizing a macroergonomics approach to design work systems can help identify aspects of human-technology-organization interfaces that impact workers' perceptions of safety, both positively and negatively. Such an approach also supplements traditional uses of safety climate as a leading indicator of safety and helps expand research toward an approach that can determine problems impacting safety. The purpose of this study was to develop a methodology that extends safety climate beyond just an overall score by using the framework of macroergonomics to examine the entire system in a more comprehensive manner. The proposed methodology can be used as a way to identify gaps in the specific work system, and this information can be used to design interventions to change the safety climate, and ultimately the culture, of an organization in order to reduce negative safety outcomes.

Undergraduate college students' upper extremity symptoms and functional limitations related to computer use: a replication study.

PURPOSE: To replicate Hupert et al.'s [5] evaluation of computer-related upper extremity musculoskeletal symptoms, functional limitations, academic performance impact, medication use and health services utilization among a college student population. SUBJECTS AND METHODS: A cross-sectional survey of undergraduate students living in a single residential dormitory at a private southwestern university who agreed to participate completed the College Computing & Health Survey in the Spring of 2001. RESULTS: Of the 127 dormitory residents, 116 students participated and 54% reported experiencing symptoms associated with computer usage. Sixty-two percent of students surveyed experienced functional limitations. More women than men reported symptoms, functional limitations and neck and shoulder pain; those with functional limitations reported higher use of medications than other participants. CONCLUSION: These findings, which match the general findings of the previous research study conducted with the same instrument but in a different college student population, suggest a high level of computer-use-related musculoskeletal symptoms among college students. Universities may want to consider providing ergonomic training designed for college students to: conduct workstation assessments; identify computer related problems (risk factors); and, propose ergonomic solutions.

Direct observation of computer workplace risk factors of college students.

Recently, researchers have reported high musculoskeletal symptom prevalence at several US colleges. Since ergonomic interventions have been shown to prevent and reduce disability, it is important to identify the risk factors for developing symptoms among college students. A nested case-control study was completed to determine computer-related ergonomic risks associated with musculoskeletal symptoms. A trained observer completed ergonomic assessments on 52 randomly selected cases and controls. More than 75 percent (cases and controls combined) of the population was exposed to nine potential postural strains including: arms not along side during keying or mousing; lower back not supported; not having chair accessories; computer monitor not adjustable; mouse being too high or low; hand/wrist/forearm in contact with the desk edge; lack of wrist support; and keyboard not being adjustable. Cases and controls were equally likely to have substantially elevated risks but because the sample was small and lacked power, no risks were statistically significant. Since many known risk factors were prevalent in cases and controls, more research is required to evaluate and prevent injury in this population.

Improvements in musculoskeletal health and computing behaviors: Effects of a macroergonomics office workplace and training intervention.

Computer use and its association with musculoskeletal and visual symptoms is an escalating concern. Organizations are shifting to a more proactive injury prevention perspective. Accordingly, a macroergonomics intervention consisting of flexible workplace design and office ergonomics training was designed to examine the effects on worker's computing behaviors, postures, and musculoskeletal discomfort, and their relationship to psychosocial factors. Participants were assigned to either group: 1) no-intervention control 2) flexible Workplace-only (WP-only), and 3) flexible Workplace + Training (WP+T). Observational findings indicate both intervention groups experienced positive, significant changes in improved workstation arrangements and computing postures, with the WP+T intervention group exhibiting a higher, significant change of behavioral translation. Also, significant, positive relationships between observed postures and musculoskeletal discomfort/pain were found. The intervention effect was stronger when management was responsive to workers' ergonomics needs. This study suggests that a macroergonomics intervention can produce beneficial effects for office and computer workers and organizations.

Individual employee's perceptions of " Group-level Safety Climate" (supervisor referenced) versus " Organization-level Safety Climate" (top management referenced): Associations with safety outcomes for lone workers.

Research has shown that safety climate is among the strongest predictors of safety behavior and safety outcomes in a variety of settings. Previous studies have established that safety climate is a multi-faceted construct referencing multiple levels of management within a company, most generally: the organization level (employee perceptions of top management's commitment to and prioritization of safety) and group level (employee perceptions of direct supervisor's commitment to and prioritization of safety). Yet, no research to date has examined the potential interaction between employees' organization-level safety climate (OSC) and group-level safety climate (GSC) perceptions. Furthermore, prior research has mainly focused on traditional work environments in which supervisors and workers interact in the same location throughout the day. Little research has been done to examine safety climate with regard to lone workers. The present study aims to address these gaps by examining the relationships between truck drivers' (as an example of lone workers) perceptions of OSC and GSC, both potential linear and non-linear relationships, and how these predict important safety outcomes. Participants were 8095 truck drivers from eight trucking companies in the United States with an average response rate of 44.8%. Results showed that employees' OSC and GSC perceptions are highly correlated (r= 0.78), but notable gaps between the two were observed for some truck drivers. Uniquely, both OSC and GSC scores were found to have curvilinear relationships with safe driving behavior, and both scores were equally predictive of safe driving behavior. Results also showed the two levels of climate significantly interacted with one another to predict safety behavior such that if either the OSC or GSC scores were low, the other's contribution to safety behavior became stronger. These findings suggest that OSC and GSC may function in a compensatory manner and promote safe driving behavior even when either OSC or GSC scores are low. The results of this study provide critical insight into the supplementary interaction between perceptions of OSC and GSC. Recommendations for future research, as well as practical recommendations for organizational intervention, are discussed.

Effect of a workplace design and training intervention on individual performance, group effectiveness and collaboration: the role of environmental control.

The effects of a workplace design and training intervention and the relationships between perceived satisfaction of office workplace design factors (layout and storage) and work performance measures (individual performance, group collaboration and effectiveness) were studied with 120 office workers using the Workplace Environment Questionnaire. Further, we examined whether environmental control had a direct effect on work performance, and then explored whether environmental control mediated or moderated the relationship between workplace design factors and work performance. Results showed a significant, positive impact of the intervention on environmental satisfaction for workstation layout. Satisfaction with workstation layout had a significant relationship with individual performance, group collaboration and effectiveness; and satisfaction with workstation storage had a significant relationship with individual performance and group collaboration. Environmental control had a direct impact on individual performance and group collaboration; whereas, the mediating and moderating effects of environmental control on the relationship between workplace design factors and outcome variables were not significant.