Is the physical work load equal for ageing and young blue-collar workers?

Abstract

The aim of this study was to quantify physical work load of blue-collar workers and to compare the work load factors between ageing (45+years) and young workers. The subjects included 63 men (41 construction workers and 22 vehicle inspectors). The mean age of the ageing and young subjects was 52 and 33 years, respectively. The dynamic (Edholm scale and HR), static postural (OWAS method) and perceived (RPEs) work loads were assessed at work sites. Energy expenditure, HR and the proportions of poor work postures were similar when the ageing and young subjects were compared in their occupational groups. During work, RPEs varied from “very light” to “fairly hard” regardless of age. The differences in physical work load between the ageing and young construction workers and vehicle inspectors were small. The results suggest that the physical work load of blue-collar workers is not affected by age. Relevance to industry This study introduces some simple field methods which are relevant and often needed before planning and directing ergonomic, organisational and/or individual measures for adjusting physical work load of blue-collar workers and, particularly, ageing ones.