Occupational health psychology

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Occupational health psychology (OHP) is a discipline within psychology and management promoted by the United States organization National Institute for Occupational Safety and Health, that is concerned with the safety, health and well-being of workers. In the United Kingdom it is increasingly known as occupational health: psychology and management and in Australia it is often referred to as occupational health, safety and well being psychology.

It emerged from two distinct applied psychology disciplines, health psychology and industrial and organizational (I/O) psychology, and has been informed by other disciplines including industrial sociology, industrial engineering, economics, preventive medicine, public health, and occupational health. OHP is concerned with psychosocial factors in the work environment and the development, maintenance, and promotion of employee health and that of their families. The field focuses on factors in the workplace that can lead to injury, disease, and distress.

Historical overview

Origins

The Industrial Revolution prompted thinkers to concern themselves with the nature of work. For example, Marx's theory of alienation has been influential. Taylor's (1911) Principles of Scientific Management as well as Mayo’s research in the late 1920s and early 1930s on workers at the Hawthorne Western Electric plant helped to inject work and its impact on workers into the subject matter psychology addresses. The creation in 1948 of the Institute for Social Research (ISR) at the University of Michigan was important because of its research on occupational stress and employee health.

Research in the UK by Trist and Bamforth (1951) showed that the reduction in autonomy that accompanied organizational changes in English coal mining operations affected worker morale. Arthur Kornhauser’s work in the early 1960s on the mental health of automobile workers also contributed to the development of the field. A study by Gardell (1971) that examined the impact of work organization on mental health in Swedish pulp and paper mill workers and engineers. Research on the impact of unemployment on mental health, which was conducted at the University of Sheffield’s Institute of Work Psychology, also influenced OHP. In 1970 Kasl and Cobb documented the impact of unemployment on blood pressure.

Emergence as a field of study

The term "occupational health psychology" first appeared in print, and was discussed as a topic in psychology, from 1985, when Everly advocated for psychologists' role in health promotion in the workplace. Everly also described occupational health psychology at the time as a specialization within health psychology. In the 1980's, a dramatic increase in the number of stress-related worker's compensation claims helped to lead the National Institute for Occupational Safety and Health (NIOSH) to list psychological factors as a "leading occupational health risk" in 1988. When this was coupled with an increased recognition of the impact of stress on a range of problems in the workplace, NIOSH found that their stress-related programs were significantly increasing in prominence. In 1990, Raymond et al. argued that the time has come for psychologists to get interdisciplinary training in "occupational health psychology," stating that creating healthy workplaces should be a goal for psychology, and that psychology doctoral training should be provided in work and health. This article stated that there is a viable role for occupational health psychologists trained at the doctoral level and that doctoral training would be based on the integration of health psychology and public health.

Development after 1990

In 1990, the American Psychological Association (APA) and the National Institute for Occupational Safety and Health (NIOSH) jointly organized the first international Work, Stress, and Health conference in Washington, DC, the first major meeting in what would become a major OHP conference series. In 1996, the Journal of Occupational Health Psychology was published by APA. In 1999, the European Academy of Occupational Health Psychology (EA-OHP) was established. That same year, the International Commission on Occupational Health created the Work Organisation and Psychosocial Factors (ICOH-WOPS) scientific committee, that focused primarily on OHP (p. 31).

In 2000 an informal International Coordinating Group for Occupational Health Psychology (ICGOHP) was formed as to facilitate the development of research, education, conferences, and practice of OHP through meetings at major conference events. In 2005, the Society for Occupational Health Psychology (SOHP) was founded in the United States. In 2000 Work & Stress, published by Taylor & Francis, became associated with the EA-OHP. In 2008, SOHP joined with APA and NIOSH in co-sponsoring the, by then, biennial Work, Stress, and Health conferences.

Research methods

Main article: List of psychological research methods

The main purpose of OHP research is to understand how working conditions affect worker health, as well as to evaluate the effectiveness of interventions. The research methods used are similar to those used in other branches of psychology.

Standard research designs

Self-report survey methodology is the most used approach in OHP research. Cross-sectional designs are commonly used, case-control designs less often. Longitudinal designs including prospective cohort studies and experience sampling studies can examine relationships over time. Quasi-experimental designs and, less commonly, experimental approaches have been used.

Quantitative methods

Statistical methods commonly used in other areas of psychology are also used in OHP-related research. Statistical methods used include structural equation modeling and hierarchical linear modeling (HLM; also known as multilevel modeling). HLM can better adjust for similarities between employees and is especially well suited to evaluating the lagged impact of work stressors on health outcomes; in this research context HLM can help minimize censoring and is well-suited to experience sampling studies. Meta-analyses have been used to aggregate data (modern approaches to meta-analyses rely on HLM), and draw conclusions across multiple studies.

Qualitative research methods

Qualitative research methods include interviews, focus groups, and self-reported, written descriptions of stressful incidents at work. First-hand observation of workers on the job has also been used, as has participant observation.

Research topics

Accidents and safety

Psychological factors are an important factor in Occupational accidents that can lead to injury and death of employees. An important influence on the incidence of accidents is the organization's safety climate that is employees' shared beliefs about how supervisors reward and support safety behavior.

Health behavior

Organizations can play a role in the health behavior of employees by providing resources to encourage exercise, nutrition, and smoking cessation.

Occupational stress and cardiovascular disease

Main articles: Occupational stress and Cardiovascular disease

A number of significant factors are related to increased risk for cardiovascular disease (CVD). These risk factors include smoking, obesity, low density lipoprotein (the "bad" cholesterol), lack of exercise, and blood pressure, among others. In a case-control study involving two large U.S. data sets, Murphy (1991) found that hazardous work situations, jobs that required vigilance and responsibility for others, and work that required attention to devices were related to increased risk for cardiovascular disability. These included jobs in transportation (e.g., air traffic controllers, airline pilots, bus drivers, locomotive engineers, truck drivers), preschool teachers, and craftsmen. Among 30 studies involving men and women, most have found an association between workplace stressors and CVD.

Job strain

According to the Demand-Control Model, job strain results from the combination of low work-related decision latitude and high workload. Fredikson, Sundin, and Frankenhaeuser (1985) found that reactions to psychological stressors include increased activity in the brain axes which play an important role in the regulation of blood pressure, particularly ambulatory blood pressure. A meta-analysis and systematic review involving 29 samples linked job strain to elevated ambulatory blood pressure. Belkić et al. (2000) found that many of the 30 studies covered in their review revealed that decision latitude and psychological workload exerted independent effects on CVD; two studies found synergistic effects, consistent with the strictest version of the strain model. A review of 17 longitudinal studies having reasonably high internal validity found that 8 showed a significant relation between job strain and CVD and 3 more showed a nonsignificant relation. The findings, however, were clearer for men than for women, on whom data were more sparse.

Musculoskeletal disorders

Main article: Musculoskeletal disorders

Approximately 2.5 million workers in the US suffer from musculoskeletal disorders, which is the third most common cause of disability and early retirement for American workers. In Europe MSDs are the most often reported workplace health problem. The development of musculoskelelatal problems cannot be solely explained in the basis of biomechanical factors (e.g., repetitive motion) although such factors contribute. There has been evidence that psychosocial workplace factors (e.g., job strain) also contribute to the development of these problems.

Effort-reward imbalance

An alternative model of job stress is the effort-reward imbalance model. That model holds that high work-related effort coupled with low control over job-related intrinsic (e.g., recognition) and extrinsic (e.g., pay) rewards triggers high levels of activation in neurohormonal pathways that, cumulatively, are thought to exert adverse effects on cardiovascular health. At least five studies of men have linked effort-reward imbalance with CVD.

Job loss

Research has also shown that job loss adversely affects cardiovascular health as well as health in general.

Burnout

Main articles: Burnout (psychology) and Occupational burnout

There is evidence from a prospective study that job-related burnout, controlling for traditional risk factors such as smoking, blood pressure, etc., increases the risk of coronary heart disease over the course of the next three and a half years in workers who were initially disease-free.

Mental disorder

Alcohol abuse

Main article: Alcohol abuse

Another study based on cross-sectional ECA data found high rates of alcohol abuse and dependence in the construction and transportation industries as well as among waiters and waitresses, controlling for sociodemographic factors. Within the transportation sector, heavy truck drivers and material movers were at especially high risk. A prospective study of ECA subjects who were followed one year after the initial interviews provided data on newly incident cases of alcohol abuse and dependence. This study found that workers in jobs that combined low control with high physical demands were at increased risk of developing alcohol problems although the findings were confined to men.

Depression

Main article: Major depressive disorder

Using data from the ECA study, Eaton, Anthony, Mandel, and Garrison (1990) found that members of three occupational groups, lawyers, secretaries, and special education teachers (but not other types of teachers) showed elevated rates of DSM-III major depression, adjusting for social demographic factors. The ECA study involved representative samples of American adults from five U.S. geographical areas, providing relatively unbiased estimates of the risk of mental disorder by occupation; however, because the data were cross-sectional, no conclusions bearing on cause-and-effect relations are warranted. Evidence from a Canadian prospective study indicated that individuals in the highest quartile of occupational stress are at increased risk of experiencing an episode of major depression. A meta-analysis that pooled the results of 11 well-designed longitudinal studies indicated that a number of facets of the psychosocial work environment (e.g., low decision latitude, high psychological workload, lack of social support at work, effort-reward imbalance, and job insecurity) increase the risk of common mental disorders such as depression.

Personality disorders

Main article: Personality disorder § In the workplace

Depending on the diagnosis, severity and individual, and the job itself, personality disorders can be associated with difficulty coping with work or the workplace, potentially leading to problems with others by interfering with interpersonal relationships. Indirect effects also play a role; for example, impaired educational progress or complications outside of work, such as substance abuse and co-morbid mental disorders, can plague sufferers. However, personality disorders can also bring about above-average work abilities by increasing competitive drive or causing the sufferer to exploit his or her co-workers.

Schizophrenia

Main article: Schizophrenia

In a case-control study, Link, Dohrenwend, and Skodol found that, compared to depressed and well control subjects, schizophrenic patients were more likely to have had jobs, prior to their first episode of the disorder, that exposed them to “noisesome” work characteristics (e.g., noise, humidity, heat, cold, etc.). The jobs tended to be of higher status than other blue collar jobs, suggesting that downward drift in already-affected individuals does not account for the finding. One explanation involving a diathesis-stress model suggests that the job-related stressors helped precipitate the first episode in already-vulnerable individuals. There is some supporting evidence from the Epidemiologic Catchment Area (ECA) study.

Psychological distress

Main article: Psychological distress

A number of longitudinal studies have shown that adverse working conditions can contribute to the development of psychological distress. Psychological distress refers to negative affect, without the individuals necessarily meeting criteria for a psychiatric disorder. Psychological distress is often expressed in affective (depressive), psychophysical or psychosomatic (e.g., headaches, stomach aches, etc.), and anxiety symptoms. The relation of adverse working conditions to psychological distress is thus an important avenue of research. Job satisfaction is also related to negative health outcomes.

Working conditions

Parkes (1982) studied the relation of working conditions to psychological distress in British student nurses. She found that in this "natural experiment," student nurses experienced higher levels of distress and lower levels of job satisfaction in medical wards than in surgical wards; compared to surgical wards, medical wards make greater affective demands on the nurses. In another study, Frese (1985) showed that objective working conditions give rise to subjective stress and psychosomatic symptoms in blue collar German workers. In addition to the above studies, a number of other well-controlled longitudinal studies have implicated work stressors in the development of psychological distress and reduced job satisfaction.

Economic insecurity

Some researchers in occupational health psychology are concerned with (a) understanding the impact of economic crises on individuals' physical and mental health and well-being and (b) calling attention to personal and organizational means for ameliorating the impact of the crisis. Ongoing job insecurity, even in the absence of job loss, is related to higher levels of depressive symptoms, psychological distress, and worse overall health.

Work and Family

Employees must balance their working lives with their home lives. Work–family conflict is a situation in which the demands of work (family) conflict with the demands of family (work), making it difficult to adequately do both.

Workplace interventions

Industrial organizations

OHP interventions often concern both the health of the individual and the health of the organization. Adkins (1999) described the development of one such intervention, an organizational health center (OHC) at a California industrial complex. The OHC helped to improve both organizational and individual health as well as help workers manage job stress. Innovations included labor-management partnerships, suicide risk reduction, conflict mediation, and occupational mental health support. OHC practitioners also coordinated their services with previously underutilized local community services in the same city, thus reducing redundancy in service delivery.

Hugentobler, Israel, and Schurman (1992) detailed a different, multi-layered intervention in a mid-sized Michigan manufacturing plant. The hub of the intervention was the Stress and Wellness Committee (SWC) which solicited ideas from workers on ways to improve both their well-being and productivity. Innovations the SWC developed included improvements that ensured two-way communication between workers and management and reduction in stress resulting from diminished conflict over issues of quantity versus quality. Both the interventions described by Adkins and Hugentobler et al. had a positive impact on productivity.

National Institute for Occupational Safety and Health's work

Currently there are efforts under way at NIOSH to help reduce the incidence of preventable disorders (e.g., sleep apnea) among heavy-truck and tractor-trailer drivers and, concomitantly, the life-threatening accidents to which the disorders lead, improve the health and safety of workers who are assigned to shift work or who work long hours, and reduce the incidence of falls among iron workers.

Military and first responders

The Mental Health Advisory Teams of the United States Army employ OHP-related interventions with combat troops. OHP also has a role to play in interventions aimed at helping first responders.

Modestly scaled interventions

Schmitt (2007) described three different modestly scaled OHP-related interventions that helped workers abstain from smoking, exercise more frequently, and shed weight. Other OHP interventions include a campaign to improve the rates of hand washing, an effort to get workers to walk more often, and a drive to get employees to be more compliant with regard to taking prescribed medicines. The interventions tended reduce organization health-care costs.

Workplace mistreatment

There are many forms of workplace mistreatment ranging from relatively minor incivility to serious cases of bullying.

Abusive supervision

Abusive supervision is the extent to which a supervisor engages in a pattern of behavior that harms subordinates.

Workplace bullying

Although definitions of workplace bullying vary, it involves a repeated pattern of harmful behaviors directed toward and individual.

Workplace incivility

Workplace incivility has been defined as "low-intensity deviant behavior with ambiguous intent to harm the target....Uncivil behaviors are characteristically rude and discourteous, displaying a lack of regard for others" (p. 457) Incivility is distinct from violence. Examples of workplace incivility include insulting comments, denigration of the target's work, spreading false rumors, social isolation, etc. A summary of research conducted in Europe suggests that workplace incivility is common there. In research on more than 1000 U. S. civil service workers, more than 70% of the sample experienced workplace incivility in the past five years. Compared to men, women were more exposed to incivility; incivility was associated with psychological distress and reduced job satisfaction.

Sexual harassment

Sexual harassment is behavior that denigrates or mistreats an individual due to his or her gender, creates an offensive workplace, and interferes with an individual being able to do the job.

Workplace violence

Main articles: Workplace violence and Workplace aggression

Workplace violence is a significant health hazard for employees.

Homicide

In 1996 there were 927 work-associated homicides in the United States, in a labor force that numbered approximately 132,616,000. The rate works out to be about 7 homicides per million workers for the one year. Men are more likely to be victims of workplace homicide than women.

Nonfatal assault

The vast majority of workplace assaults are nonfatal, with an annual physical assault rate of 6% in the U.S. workforce. Assaultive behavior in the workplace often produces injury, psychological distress, and economic loss. One study of California workers found a rate of 72.9 non-fatal, officially documented assaults per 100,000 workers per year, with workers in the education, retail, and health care sectors subject to excess risk. A Minnesota workers' compensation study found that women workers had a twofold higher risk of being injured in an assault than men, and health and social service workers, transit workers, and members of the education sector were at high risk for injury compared to workers in other economic sectors. A West Virginia workers' compensation study found that workers in the health care sector and, to a lesser extent, the education sector were at elevated risk for assault-related injury. Another workers' compensation study found that excessively high rates of assault-related injury in schools, healthcare, and, to a lesser extent, banking. In addition to the physical injury that results from being a victim of workplace violence, individuals who witness such violence without being directly victimized are at increased risk for experiencing adverse effects, as found in a study of Los Angeles teachers.

Curbing or preventing

Although the dimensions of the problem of workplace violence vary by economic sector, one sector, education, has had some limited success in introducing programmatic, psychologically-based efforts to reduce the level of violence. Research suggests that there continue to be difficulties in successfully "screening out applicants who may be prone to engaging in aggressive behavior," suggesting that aggression-prevention training of existing employees may be an alternative to screening. Only a small number of studies evaluating the effectiveness of training programs to reduce workplace violence currently exist.

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Occupational safety and health

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See also	Bullshit job Busy work Credentialism and educational inflation Emotional labor Evil corporation Going postal Kiss up kick down Labor rights Make-work job Narcissism in the workplace Post-work society Presenteeism Psychopathy in the workplace Sunday scaries Slow movement (culture) Toxic leader Toxic workplace Workhouse
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v t e Psychology
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v t e Aspects of occupations
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