Job Demands-Resources: Untangling Stress and Motivation

in job crafting, Stress
Still shot from Charlie Chaplin's "Modern Times" illustrating high demands, low resources, no social support on an assembly line.

High demands, low resources. No social support.

To understand what job crafting has to do with employee health and wellbeing, it’s important to understanding the inner workings of job stress and motivation.

In a previous post — “I’ve Seen the Future of Employee Wellbeing: It’s Name Is Job Crafting” — I explained how, in 2001, Amy Wrzesniewski and Jane Dutton proposed that employees tweak their job tasks, workplace social connections, and perspective about their role to gain a greater sense of purpose and meaning, potentially leading to better job performance.

Around that same time, in the Netherlands, Evangelia Demerouti, Arnold Bakker, and others introduced their model of Job Demands-Resources (JD-R), which has since been fine-tuned and validated as relevant to a full range of occupations and outcomes in countless studies around the world.

If you’re familiar with job stress research, you know that job stress has causes, and shouldn’t be dismissed as a choice employees make.

Forget trendy notions that “stress is good.” It’s wishful thinking based on cherry-picked evidence. If stress is so great, why aren’t employees demanding more of it?

Forty years of research has shown that harmful job stress is a result of jobs that have low levels of autonomy and high demands.

Job Demands and Autonomy Are Linked to Health Problems

Over the years, job autonomy (or control) has been defined different ways, but can be broadly understood as limited flexibility (for example, with the tasks of the job) and limited decisional latitude, meaning the employee isn’t permitted or encouraged to make decisions in their work or about their work.

Job demands originally meant the psychological intensity of work, but ultimately can be understood to include workload, time pressure, and physical demands.

Job strain illustration shows relationship of demands, control, social support, and health.

Job strain

Robert Karasek introduced the theory of demands and control in 1979. He and others have shown that jobs in which workers consistently encounter high job demands with low job control — the combination of which is called job strain — are linked to a variety of health issues, especially high blood pressure and cardiovascular disease, as well as depression, anxiety, burnout, and metabolic disorders. Reducing job strain can improve productivity.

Karasek later learned that social support “buffers” the negative effects of high-strain jobs. Social support originally meant supervisors’ and co-workers’ support for performing job tasks, but can be understood in all of the many ways it’s been defined: Having a sense of “belongingness” at work; having co-workers who are empathetic and confidantes; having supervisors who take a genuine interest in the personal and professional lives of team members; and having a best friend at work.

In sum, high demands and low control are an unhealthy combo. (High demands and high control are not necessarily bad.)

Effort-Reward Imbalance Is Linked to Health Problems

Unhealthy job stress has been framed in other ways. Germany’s Johannes Siegrist found that work in which the required effort is disproportionately high compared to the job rewards— effort-reward imbalance — leads to the same kinds of health problems that result from job strain. “Rewards,” here, doesn’t just mean financial compensation, but also career opportunities and level of esteem within the organization.

The effort-reward imbalance model reminds me of an encounter I once had with a business analyst who transferred to another department because she didn’t feel valued in the department she was hired into. When I asked her, “What would have made you feel more valued?” her answer was not “better pay” or “someone saying ‘good job’”…

“I just wanted someone to listen to my ideas,” she told me.

A worker who doesn’t feel valued (i.e. esteemed) by being “listened to” is likely to have a higher level of disengagement and health impairment. This offers a glimpse into how management style, job design, organizational culture, performance, turnover, health, and wellbeing are all interconnected.

Overtime, Job Insecurity, Injustice, and More…

Several other causes of job stress have been identified, and most of them can in some way fit into the demand-control and/or the effort-reward imbalance model:

      • • chronic overtime
      • • job insecurity
      • • work-life conflict
      • • role ambiguity (not being clear of what’s expected, receiving contradictory direction, duplication with other workers’ roles, or not understanding how the work fits into the overall organization — all of which are among the most common complaints I’ve heard from employees who report high job stress).
      • • organizational injustice (being treated unfairly, which at the extreme includes bullying and harassment)
      • • lower levels of status within the organization
      • • sustaining high levels of vigilance (e.g. first responders, air traffic controllers, etc.)

Back to Bakker

The overlaps between and the nuances of these job stress theories makes them difficult to understand and apply. That’s where Bakker and Demerouti’s Job Demands-Resources model comes in. While building on the existing theories and expanding upon them, it also provides a simpler way of making sense of job stress and motivation. I consider it a comprehensible and practical  unifying theory.

JD-R posits that all job traits can be categorized as either demands or resources. 

      • • Demands require sustained effort from employees. They’re an expenditure of personal energy.
      • • Resources help fuel progress toward work-related goals. They’re restorative, buffering the effects of job demands —and activating personal development.

I interpret JD-R to mean that Karasek’s “demands,” Siegrest’s “efforts,” as well as role ambiguity, job insecurity, injustice, tedium, and work-life conflict are demands.

Job autonomy, social support, rewards, recognition, feedback, task variety, and training are examples of resources.

Side note: If you’re familiar with Edward Deci and Richard Ryan’s self-determination theory — popularized in the Daniel Pink bestseller, Drive — which tells us that motivation and flourishing depend on autonomy, competence, and relatedness (i.e. social connection), you may recognize that job resources generally can be matched to the components of self-determination.

So…

      • • Demands regulate job stress. 
      • • Resources regulate job motivation and engagement. 
      • • And the two forces may act upon each other.

Looking Forward…

That’s enough theory for now. What I’ve come to appreciate about JD-R is how, according to research by Bakker and others, it serves as a foundation for a practical application: job crafting.

JD-R takes job crafting beyond meaning and purpose — which has received most of the public attention — and ties it directly into health and wellbeing.

I’ll spell this out further in a future post, and also draw the important distinction between positive and negative job demands. I’ll share what research shows about the effectiveness of job crafting interventions for improving employee wellbeing, work engagement, absenteeism, performance, and productivity. And I’ll offer evidence-based tips on how you can prime your organization for job crafting.

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For an excellent overview, see Bakker and Demerouti’s 2016 article: Job Demands-Resources Theory: Taking Stock and Looking Forward

How Unhealthy Is Job Strain?

in job design, job strain, Stress, Uncategorized

job strain is harmful to employee health and wellbeingJob strain is a particularly insidious form of stress that goes far beyond overflowing inboxes or tight deadlines. It is characterized primarily by organizational environments and job structure in which employees have high levels of demands placed on them and limited control over those demands (that is, low “decisional latitude”). This is the demand-control model that was originally described and measured by Robert Karasek. Other organizational and job-related factors that contribute to unhealthy job-related stress are effort-rewards imbalances, long work hours (sometimes including long commutes), job insecurity, and lack of social support on the job. Some researchers have categorized all of these stressors as job strain, others differentiate them. But most agree that these stressors — all related to organizations and job design and not to individual behavior — lead to negative health outcomes.

How unhealthy is job strain?

Job strain has been linked to hypertension and to heart disease. This is not a simple matter of people who have other risk factors, like pre-existing hypertension or what used to be called Type A personality, being drawn to stressful jobs. Research suggests a causal relationship between job strain and both hypertension and cardiovascular disease. (Some studies also have linked job strain to depression, musculoskeletal disorders, dyslipidemia, physical inactivity, obesity, and adverse birth outcomes.)

Blue collar workers are more prone to the effects of job strain compared to white collar workers, but no one is immune.

Not every study of job strain has confirmed this relationship, but most have. A 10-year prospective study of 22,086 female health professionals, published in 2012, revealed that women with active jobs (high demand, high control) and high levels of job strain (high demand, low control) were 38% more likely to experience a cardiovascular disease event (such as heart attack or diagnosis of atherosclerosis) compared to women reporting low job strain. During the study, there were 170 myocardial infarctions, 163 ischemic strokes, 440 coronary revascularizations, and 52 cardiovascular-disease-related deaths, reaffirming that cardiovascular disease is a major concern for employers and for public health.

A Finnish study of 812 employees, followed for more than 25 years, found that employees with high demands at work and low job control had a 2.2-fold increased cardiovascular mortality risk — independent of other risk factors — compared to their colleagues with low job strain.

Earlier this year, an Israeli study confirmed a link between job burnout and coronary heart disease. Job burnout was defined as physical, cognitive, and emotional exhaustion that results from stress at work. Factors contributing to burnout included most of those typically associated with job strain or job stress: heavy workload, lack of control over job situations, lack of emotional support, and long work hours. Over the course of the study, 8,838 male and female employees were followed for an average of 3.4 years. Each subject was measured for burnout, which, as it turned out, was associated with a 40% increased risk of developing heart disease. Of greatest concern, the 20% of participants with the highest burnout scores had a 79% increased risk of heart disease.

A British study of 6,014 workers, followed for an average of 11 years, found that three to four hours of overtime per day is associated with a 1.6-fold increase in coronary heart disease risk, independent of other risk factors. (More about overtime in a future post.)

Countless research studies have demonstrated the relationship between job strain and health.

Unlike many other countries (again…especially Scandinavian countries), American employers continue to insist on offering employees behaviorally based stress management programs, such as relaxation programs and time management seminars, rather than trying to address the program where the employer actually has the most control: the structure of the organization and the jobs within it.

Even the National Institute for Occupational Safety and Health declares, “Working conditions play a primary role in causing job stress” and it advises,

As a general rule, actions to reduce job stress should give top priority to organizational change to improve working conditions.

Check out the NIOSH page for some ideas about the type of organizational change that is needed.

Emphasis on the organization’s role, rather than the employee’s role, may have applications beyond stress. Fitness challenges, biggest loser contests, tobacco-free campuses, incentives, health risk assessments, coaching, health screenings, yoga classes, and even culture-of-health have limited potential to evoke meaningful population health improvement…as long as the roots of the problem persist.

[A version of this post was first published on Bob Merberg’s Health Shifting blog on December 20, 2014]