The performance of tasks with high physical loads corresponds very strongly with the necessity for breaks, which should be taken depending on the workload. The actual situation on construction sites is totally different, since breaks were traditionally arranged and almost unchanged over the last decades, with no connection to the workload. This claim was substantiated by a recent survey of supervisors (N = 64) and construction workers (N = 177). The results showed that the majority of respondents would not change the current break arrangement, particularly supervisors, who did not see the importance of an evaluated break distribution. However, a need for change is seen in statements of the construction workers’ unions to reduce stress additionally caused by high temperatures. The suggested new approach for customized breaks in connection to physical loads in this study leads to the following: The overall working time should be split into three almost comparable shares, with a duration of 2.5 to 3.5 hours, to reach a total of 9 to 10 working hours. But even if these breaks are changed in the way we suggest, the authors would recommend additional breaks if the construction workers have to perform very strenuous work, or if climate conditions increase the strain.
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