Demands, control and social support
Karasek’s model relates psychological demands to decision latitude at work. Control includes autonomy and opportunities to develop skills. Its extension incorporates support from colleagues and supervisors.
INSST Technical Note NTP 603 explains that high demands combined with low control are particularly problematic. Counting tasks is not enough: the ability to set priorities, obtain help and participate in decisions affecting work matters.
Effort and reward
Siegrist’s model examines imbalance between effort expended and what is received in return. Reward is not only financial: it includes recognition, career prospects and employment security.
The Düsseldorf research team’s description locates the problem in an impaired reciprocal relationship. Intervention may review recognition criteria, transparency and expectations as well as workload.
Job demands and resources
The JD-R model extends analysis to physical, cognitive, emotional and organisational demands, alongside the resources available to address them. NTP 1166 describes related but distinct processes of strain and motivation.
Resources may include autonomy, support, suitable tools and development opportunities. Their assessment must suit the activity: handling complaints, driving and analysing data involve different demands.
What comparing the models contributes
Each approach illuminates different questions: can people influence how they work, is effort fairly reciprocated, and are resources available to meet demands? They offer complementary perspectives, not classifications of resilient or weak people.
It should not be inferred that any high workload is healthy if autonomy exists, or that recognising effort compensates for excessive exposure. The preventive objective remains improving the conditions causing the problem.
From a theoretical framework to assessment
A procedure suited to the population and factors studied is needed, with worker participation and confidentiality protection. Information about tasks, organisation and exposure should be combined with technically appropriate instruments.
A conceptual model and a questionnaire are different things. Changing questions, scales or interpretation without supporting evidence may invalidate results. Instrument conditions of use must also be respected and reports allowing individual responses to be identified avoided.
Turning results into verifiable changes
Conclusions should translate into measures concerning workload, priorities, autonomy, support or recognition, with owners and follow-up. Individual stress-management training can complement those measures but cannot replace them.
Check both implementation and effects on working conditions. Reducing a score is insufficient if conflicting instructions, constant interruptions or deadlines that prevent safe work remain.
Hypothetical example: customer service
A team receives urgent cases without being able to prioritise their resolution. Demands, autonomy and support are analysed together, and the rules for recognising effort are examined.
The employer agrees priority criteria, peak-demand cover and regular review with the team. The models help identify specific organisational decisions; they are not used to assign a diagnosis to each person.
