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The purpose of this product is to study the correlation between self-reported and measured mechanical workload of neck and shoulder on workstations level. Six persons participated in the study, each working at six different workstations. The workstations were ranked from “lowest” to “highest” workload according to different variables. The correlations were studied on ranking order. Different types of assembly work were mainly carried out in all stations. In this work (few high workload situations, and a high degree of monotonous, repetitive work situations) one situation with a high workload could in this case be experienced as positive. The methods lead to contradicting results as regards identifying work situations with high loads. The results indicate that the methods lead to similar results as regards identifying work situations with low loads.

The relationship between the psychosocial factors at work (psychological demands, decision latitude, and social support) and two aspects of mental load (Stress and Energy) was studied among 179 employees in a car body factory (137 men, 42 women). Regression analyses showed that Stress was positively correlated with Psychological demands, and Energy with Decision latitude. Shoulder and neck symptoms were more common among those who reported high stress; shoulder symptoms were also associated with high Psychological demands.