Occupational Stress

Abstract

Occupational stress is the pattern of adverse psychological, physiological, and behavioral reactions that arise when the demands of work exceed a person's capacity or resources to meet them. Chronic job strain forecasts cardiovascular disease, depression, absenteeism, and turnover, which is why it is among the most studied topics in work psychology. This article sets out the field's dominant models: Karasek's demand-control account, in which strain peaks when heavy demands meet low decision latitude; Siegrist's effort-reward imbalance, in which a mismatch between effort and reward drives risk; and the job demands-resources model, which separates a health-impairment path from a motivational one. It places these against Lazarus's transactional view of stress as appraisal, and reviews the health evidence and the recovery that undoes strain. Three interactive demonstrations let the reader manipulate demands, rewards, and resources.

Keywords: occupational stress, job strain, burnout, effort-reward imbalance

Occupational stress is the strain that results when the psychological, physical, and social demands of a job outstrip the resources a worker can bring to bear on them. MeSH defines it as the adverse psychological and behavioral reactions caused by the pressures and demands of employers, clients, or the physical and social environment of the workplace. It is not a property of the job alone or of the person alone, but of the transaction between them: the same workload that overwhelms one worker energizes another, depending on the control, support, and rewards that surround it. Understood this way, occupational stress is a specific form of psychological stress, marked out from stress in general by the setting that produces it and by the organizational levers available to reduce it (Ganster & Rosen, 2013).

The scientific interest in occupational stress is driven by its consequences. Sustained job strain is a documented risk factor for cardiovascular disease, common mental disorders, musculoskeletal complaints, and behavioral outcomes such as absenteeism and turnover, and its costs fall on workers and organizations alike (Ganster & Rosen, 2013; Harvey et al., 2017). A century of research has converged on a small set of models that identify which features of work are toxic and why, and it is those models — demand-control, effort-reward imbalance, and job demands-resources — that give the field its structure and give managers something actionable to change.

Types of Occupational Stress

MeSH files occupational stress beneath occupational diseases and psychological stress, and it in turn has two narrower descriptors of its own. These are not competing definitions but recognized syndromes into which sustained work strain resolves; naming them fixes the boundaries of the broader construct. As always with a taxonomy of this kind, the categories are indexing conveniences rather than mutually exclusive diagnoses: a single worker may show features of both, and both share the demand-driven mechanism set out below. The two direct child descriptors are listed in Table 1.

Professional burnout is the most thoroughly researched form, the syndrome of emotional exhaustion, cynicism, and reduced efficacy that Maslach and Jackson turned into a measurable construct (Maslach & Jackson, 1981). Compassion fatigue names the narrower cost of caring work, the empathic depletion seen in helping professions. Neither yet has its own article on this site; both are treated here as endpoints of the general strain process rather than as separate mechanisms.

The Demand-Control Model

The first influential model of occupational stress was Robert Karasek's demand-control (or job strain) model, which argued that the psychological demands of a job are harmful chiefly in combination with a second factor: decision latitude, the worker's control over how and when the work is done (Karasek, 1979). Crossing high versus low demands with high versus low latitude yields four kinds of job. The high-strain job — heavy demands with little control — is where Karasek predicted the greatest risk to health, because the worker cannot modulate the pace or method of a punishing workload. The active job pairs high demands with high control and is not harmful; instead it promotes learning and growth. Low-demand jobs are either low-strain (with control) or passive (without it), the latter associated with a gradual atrophy of skill and motivation.

The model's decisive claim is the interaction: demands and control must be considered together, because the same objective workload is toxic under low latitude and tolerable, even stimulating, under high latitude. This reframed workplace intervention. If strain is driven by the combination, then redesigning jobs to increase decision latitude — giving workers say over scheduling, method, and priorities — can reduce strain without lightening the workload itself (Karasek, 1979). A later extension added social support as a third axis, distinguishing high-strain jobs that are isolated from those that are buffered by supportive colleagues. The first demonstration lets the reader move a job around the demand-control plane and watch which quadrant, and which predicted strain, results.

Karasek’s model turns on an interaction: the same psychological demand is toxic under low decision latitude and tolerable, even stimulating, under high latitude. Hold demands high and raise latitude to move the job from the high-strain corner into the active quadrant, cutting predicted strain without removing a single demand — which is why redesigning jobs to add control is a distinct lever from cutting workload (Karasek, 1979).

Effort-Reward Imbalance

Where the demand-control model looks at the task, Johannes Siegrist's effort-reward imbalance (ERI) model looks at the exchange. It holds that work is governed by a norm of social reciprocity: effort spent on the job should be met by adequate reward, delivered through three channels — money, esteem, and career security or status control (Siegrist, 1996). When high effort is met by low reward — a demanding job that is poorly paid, insecure, or unrecognized — the reciprocity norm is violated, and the resulting emotional distress and autonomic arousal raise the risk of illness, cardiovascular disease in particular.

ERI adds a personal factor that the situational models omit: overcommitment, a motivational pattern of excessive striving and an inability to withdraw from work obligations. Overcommitted workers tend to misjudge the effort-reward balance and to expose themselves to high-effort situations more often, so the model predicts the greatest risk where an unfavorable external exchange meets an overcommitted person (Siegrist, 1996). Because the model quantifies stress as a ratio of effort to reward, it lends itself to a simple arithmetic reading, developed in the worked example below and in the second demonstration, where the reader adjusts effort and reward and watches the imbalance ratio cross the threshold of one.

ERI = E / R = 80 / 40 = 2

state: imbalance (effort exceeds reward)

Effort-reward imbalance reads strain as the ratio of effort invested to reward received. A nurse working intensively for modest pay (E = 80, R = 40) sits at a ratio of 2.0, effort at twice the reward; improving the reward to R = 80 drops the ratio to 1.0 without asking for less work, and reducing effort to E = 50 as well yields 0.625, a favorable exchange. Raising reward alone can neutralize an imbalance the demand-control model would leave unaddressed (Siegrist, 1996).

The Job Demands-Resources Model

The job demands-resources (JD-R) model, introduced by Demerouti, Bakker, and colleagues, absorbed the earlier models into a more general framework (Demerouti et al., 2001). Its move was to abandon the fixed list of stressors and instead sort every feature of a job into two broad categories. Job demands are the aspects that require sustained effort and so carry a physiological or psychological cost — workload, time pressure, emotional labor, role conflict. Job resources are the aspects that help achieve goals, reduce the cost of demands, or foster growth — autonomy, feedback, social support, and development opportunities. Decision latitude and reward, the pivots of the two earlier models, become special cases of resources.

The model's structure is a dual path. Demands drive a health-impairment process: sustained effort depletes energy and, unchecked, ends in exhaustion and ill health. Resources drive a separate motivational process whose endpoint is work engagement, a positive state of vigor and absorption, and they also buffer the impact of demands on strain (Bakker & Demerouti, 2007). This dual-path architecture explains why strain and engagement are not simply opposite ends of one scale, and why adding resources can protect a worker even when the demands themselves cannot be reduced. Over two decades the framework matured from a model into a broader theory, incorporating personal resources, the reciprocal gain spirals of engagement, and the active process of job crafting by which workers reshape their own demands and resources (Bakker & Demerouti, 2017). The third demonstration puts the dual path on screen: raising demands drives strain up while adding resources both lifts engagement and buffers the strain.

strain level: high

The job demands-resources model splits every job feature into demands, which feed a health-impairment path ending in strain, and resources, which feed a motivational path ending in work engagement and also buffer the impact of demands. Hold demands high and raise resources: engagement climbs while strain falls, because resources both motivate and absorb demand — the reason strain and engagement are distinct outcomes, not two ends of one scale (Demerouti et al., 2001; Bakker & Demerouti, 2007).

Health Consequences and the Transactional View

The models agree on an endpoint: sustained exposure to adverse work conditions damages health. The idea that prolonged demand harms the body through a general physiological response originates with Hans Selye, whose general adaptation syndrome described a stereotyped three-stage reaction — alarm, resistance, and exhaustion — mounted against any sustained stressor, and which first gave the word stress its biological meaning (Selye, 1936). A large multidisciplinary review by Ganster and Rosen carried that insight into the workplace, tracing the physiological pathway by which repeated activation of the stress-response systems, and the failure to recover between episodes, produces allostatic load — the cumulative biological wear that translates chronic job strain into cardiovascular, metabolic, and immune disease over years (Ganster & Rosen, 2013). On the mental-health side, a systematic meta-review by Harvey and colleagues confirmed that high job demands, low control, effort-reward imbalance, and low workplace support each prospectively raise the risk of common mental disorders such as depression and anxiety, giving the theoretical constructs hard epidemiological support (Harvey et al., 2017).

None of this operates automatically, however, and this is where Richard Lazarus's transactional model of stress supplies the missing psychological step. In Lazarus and Folkman's account, a stressor produces strain only through appraisal: the person first judges whether a situation is threatening (primary appraisal) and then whether they have the resources to cope with it (secondary appraisal), and stress is the product of these judgments rather than of the stimulus alone (Lazarus & Folkman, 1984). The transactional view is why the occupational-stress models are all relational: demand-control, effort-reward, and JD-R each pit a demand against a resource precisely because, as Lazarus argued, it is the balance a person perceives, not the raw demand, that determines whether strain follows.

Worked Example

The effort-reward imbalance model can be put in arithmetic. Represent the effort a worker invests as E and the reward they receive as R, each on a 0–100 scale, and define the imbalance ratio as ERI = E / R. A ratio above 1 means effort exceeds reward and the reciprocity norm is violated; a ratio at or below 1 means reward keeps pace with effort. This is a deliberately simplified reading of Siegrist's model, which in its full form weights the ratio by the number of items on each scale, but it captures the model's central claim that risk rises with the effort-to-reward gap (Siegrist, 1996).

Consider a nurse working intensively for modest pay and little recognition: E = 80, R = 40. Their imbalance ratio is ERI = 80 / 40 = 2.0, effort at twice the reward — a strongly unfavorable exchange the model links to elevated cardiovascular risk. Now hold the effort fixed at E = 80 but improve the reward to R = 80 through better pay, recognition, and job security. The ratio falls to ERI = 80 / 80 = 1.0, exactly balanced, without asking the nurse to work any less. Finally, reduce the effort as well, to E = 50 with R = 80: ERI = 50 / 80 = 0.625, a favorable exchange in which reward outweighs effort. The example makes the model's two levers explicit — lowering effort and raising reward — and shows why raising reward alone can neutralize an imbalance that the demand-control model, which ignores reward, would leave unaddressed. The second demonstration reproduces exactly this calculation.

Discussion

The three dominant models of occupational stress are best read not as rivals but as complementary lenses on one relational fact: strain arises from an imbalance between what work asks and what it gives back. Karasek's demand-control model names the pair as demands and control; Siegrist's effort-reward imbalance names it as effort and reward; the job demands-resources model generalizes the pair to any demand and any resource and adds the motivational upside of engagement (Karasek, 1979; Siegrist, 1996; Demerouti et al., 2001). Lazarus's transactional theory supplies the reason the pairing matters: because strain follows appraisal, it is the perceived balance, not the absolute level of demand, that carries the risk (Lazarus & Folkman, 1984).

The practical payoff of this convergence is a menu of interventions that do not all require lightening the workload. Increasing decision latitude, restoring reward, adding resources, and protecting recovery are each supported by the models and by the health evidence, and each is something an organization can change (Bakker & Demerouti, 2017; Ganster & Rosen, 2013). The recurring lesson of the literature is that occupational stress is not an unavoidable byproduct of demanding work but a predictable and modifiable consequence of how that work is structured.

Current Directions

Contemporary research has shifted its attention from the buildup of strain to its reversal. Sabine Sonnentag's work on recovery — the process by which the psychophysiological systems taxed at work return to baseline during non-work time — has become central, because recovery is the mechanism that prevents the day-to-day accumulation of strain into chronic illness. Sonnentag has drawn attention to a recovery paradox: the workers who most need to recover, because their jobs are the most stressful, are precisely those least able to, since high strain erodes the psychological detachment, relaxation, and sleep that recovery requires (Sonnentag, 2018). This inversion makes recovery a priority target for intervention rather than something that can be left to look after itself.

A second front is prevention at the level of the organization rather than the individual. The meta-review evidence that specific, measurable job characteristics prospectively cause mental illness has strengthened the case for redesigning work — job crafting, control-enhancing redesign, and reward restructuring — over teaching individuals to cope with conditions that should be changed (Harvey et al., 2017; Bakker & Demerouti, 2017). The direction of travel is toward primary prevention: altering the demands and resources of the job before strain appears, rather than repairing workers after it does.

Common Misconceptions

A demanding job is automatically a stressful one.

The demand-control model shows that high demands are harmful chiefly when combined with low control; a high-demand, high-control job is active and can promote growth rather than strain (Karasek, 1979).

Occupational stress is a personal weakness rather than a feature of the job.

Prospective epidemiology links objective job characteristics — high demands, low control, effort-reward imbalance, low support — to later illness, so the causes lie substantially in how work is structured, not only in the individual (Harvey et al., 2017).

The only way to reduce stress is to reduce the workload.

The models identify several other levers — adding control, restoring reward, building resources, and protecting recovery — each of which can lower strain while the workload itself stays fixed (Bakker & Demerouti, 2017; Siegrist, 1996).

Glossary

Active job.

In the demand-control model, a job combining high psychological demands with high decision latitude; it is not harmful and tends to promote learning and growth.

Allostatic load.

The cumulative biological wear produced by repeated activation of the stress-response systems without adequate recovery, the pathway by which chronic strain becomes disease.

Burnout.

A syndrome of emotional exhaustion, cynicism, and reduced professional efficacy arising from chronic workplace stress; the best-studied endpoint of occupational stress.

Compassion fatigue.

The gradual erosion of empathy and the emotional cost of caring borne by those who work closely with the suffering, such as nurses and first responders.

Decision latitude.

The control a worker has over how and when work is done, including skill discretion and decision authority; the buffering axis of the demand-control model.

Demand-control model.

Karasek's model in which job strain is highest when high psychological demands combine with low decision latitude, and demands and control interact rather than add.

Effort-reward imbalance.

Siegrist's model in which health risk arises from a mismatch between the effort a worker spends and the reward, in money, esteem, and security, that they receive.

General adaptation syndrome (GAS).

Selye's stereotyped three-stage physiological reaction — alarm, resistance, exhaustion — to any sustained stressor; the origin of the biological stress concept underlying allostatic load.

Job Demands-Resources (JD-R) model.

Demerouti and Bakker's framework sorting job features into demands, which drive a health-impairment path, and resources, which drive engagement and buffer demands.

Job demands.

The physical, psychological, social, or organizational aspects of a job that require sustained effort and so carry a cost — workload, time pressure, emotional labor, role conflict.

Job resources.

The aspects of a job — autonomy, feedback, social support, development — that help achieve goals, reduce the cost of demands, or foster growth, and that buffer strain.

Job strain.

The adverse state produced specifically by the combination of high demands and low control in the demand-control model; used more loosely as a synonym for work stress.

Occupational stress.

The adverse psychological, physiological, and behavioral reactions that arise when the demands of work exceed a worker's capacity or resources to meet them.

Overcommitment.

In the effort-reward imbalance model, a personal pattern of excessive work striving and an inability to withdraw, which amplifies exposure to unfavorable effort-reward exchanges.

Psychological demands.

The mental workload of a job — its pace, volume, and conflicting requirements — forming the demand axis of the demand-control model.

Recovery.

The process by which the psychophysiological systems taxed at work return to baseline during non-work time, preventing the accumulation of strain into chronic illness.

Transactional model of stress.

Lazarus and Folkman's account in which stress is the product of appraising a demand as threatening and one's resources as inadequate, rather than a property of the stressor alone.

Work engagement.

A positive, fulfilling work-related state of vigor, dedication, and absorption, treated in the JD-R model as the motivational endpoint that job resources produce.

Key Researchers

Arnold B. Bakker (b. 1964). Professor of work and organizational psychology at Erasmus University Rotterdam; co-developer of the job demands-resources model and the study of work engagement, reframing well-being as the joint product of job demands and resources. ORCID - Google Scholar - Faculty Page - Wikipedia - Wikidata

Evangelia Demerouti (b. 1970). Professor of work and organizational psychology at Eindhoven University of Technology; co-author of the job demands-resources model, distinguishing exhaustion driven by demands from disengagement driven by a lack of resources. Google Scholar - Faculty Page - Wikipedia - Wikidata

Richard S. Lazarus (1922-2002). Professor of psychology at the University of California, Berkeley; he developed the transactional theory of stress and coping, casting stress as the product of a person's appraisal of demands relative to resources. Wikipedia - Wikidata

Christina Maslach (b. 1946). Professor emerita of psychology at the University of California, Berkeley; she defined burnout as a three-dimensional syndrome and built the Maslach Burnout Inventory, the field's dominant measure of the exhaustion endpoint of occupational stress. Google Scholar - Faculty Page - Wikipedia - Wikidata

Johannes Siegrist (b. 1943). Emeritus professor at the Institute of Medical Sociology, Heinrich Heine University Düsseldorf; he formulated the effort-reward imbalance model, linking the mismatch between effort spent and reward received at work to cardiovascular and mental-health risk. ORCID - Wikidata

Frequently Asked Questions

What is occupational stress?
Occupational stress is the pattern of adverse psychological, physiological, and behavioral reactions that arise when the demands of a job exceed the resources a worker has to meet them. It is a transaction between the person and the work rather than a property of either alone (Ganster & Rosen, 2013).

What is the demand-control model?
It is Karasek's account, which holds that job strain is highest when high psychological demands are combined with low decision latitude, the worker's control over how the work is done. High demands paired with high control instead make a job active rather than harmful (Karasek, 1979).

What is effort-reward imbalance?
It is Siegrist's model, in which health risk arises when the effort a worker invests is not matched by adequate reward in the form of money, esteem, and security. The imbalance violates a norm of reciprocity and is linked to cardiovascular and mental-health risk (Siegrist, 1996).

How does the job demands-resources model differ from the earlier models?
It generalizes them by sorting every job feature into demands or resources, then splitting a health-impairment path driven by demands from a motivational path driven by resources and work engagement. Decision latitude and reward become particular kinds of resource (Demerouti et al., 2001; Bakker & Demerouti, 2007).

What are the health consequences of occupational stress?
Sustained job strain is a prospective risk factor for cardiovascular disease, common mental disorders such as depression and anxiety, and behavioral outcomes such as absenteeism and turnover, acting in part through the cumulative biological wear of allostatic load (Ganster & Rosen, 2013; Harvey et al., 2017).

Why does appraisal matter in occupational stress?
In Lazarus and Folkman's transactional theory, a demand produces strain only after a person appraises it as threatening and judges their resources inadequate to cope. This is why the leading models are all relational, pitting a demand against a resource rather than counting demands alone (Lazarus & Folkman, 1984).

Can occupational stress be reduced without cutting the workload?
Yes. The models identify several levers besides workload, including increasing decision latitude, restoring reward, adding job resources, and protecting recovery, each of which can lower strain while the demands themselves stay fixed (Bakker & Demerouti, 2017).

What is the recovery paradox?
Sonnentag uses the term for the finding that the workers who most need to recover, because their jobs are most stressful, are the least able to, since high strain undermines the detachment, relaxation, and sleep that recovery depends on. This makes recovery a priority target for intervention (Sonnentag, 2018).

References