25) To construct the job strain dimension, a combination of high psychological demand and low decision latitude was used.
In relation to the prevalence of exposure to PSRW according to Karasek's demand-control model and Siegrist's effort-reward imbalance model, we found that 35% of the sample reported low decision latitude, 47% faced high psychological demands and 35% experienced low social support.
Associations Between Exposure to PSRW (Demand-control and Effort-reward Imbalance Models) With Hazardous Alcohol Consumption (HAC) in Male and Female Chilean Working Adults (n=3010) Crude OR Total Males OR 95% CI OR 95% CI Demand-Control Model Low decision latitude 1.
High-strain jobs have high psychological demands and low decision latitude.
Passive jobs have low psychological demands and low decision latitude.
These results suggest that job strain and burnout are higher in jobs with high demands and low decision latitude.
Consistent with Karasek's model, the combination of high demands and low decision latitude explained blood pressure level to a greater extent than psychological demands or decision latitude on their own.
This results in a continuously valued measure of job strain expressed as the extent to which jobs are rated as a combination of low decision latitude and high psychological demands (Karasek's definition of job strain).
His core hypothesis was that high job demands were not harmful in themselves, but when accompanied by low decision latitude would result in psychological strain.
Thus the general statement that work characterized by high demands and low decision latitude is detrimental to employee well-being is well supported.
The crucial issue, however, is not simply whether jobs with high demands and low decision latitude are stressful, compared with those with only one or neither of these characteristics, but whether there is an interaction of the kind proposed.