This article presents an analysis of the static loads on the human body during selected manual unloading tasks
carried out by warehouse workers in a logistics company. The aim of the presented analyses is to minimize
static loads in the work process and thus make the employees’ work more comfortable. A tool in the form of
3D SSPP software for ergonomic workload assessment was used to carry out static load analyses. For the two
selected activities, the values of the developed forces of statically working muscles and the forces acting on the
vertebrae of the spine were determined. For the values of static loads identified, based on the simulation of the
3D SSPP program, modifications in work posture and a change in the manner of performing the tested activities
were devised. Moreover, the proposed reorganization of the tasks examined was verified by the reassessment of
the static loads on the muscles using the 3D SSPP tool. The analyses carried out after the reorganization of work
confirmed the reduction in static loads and the improvement in work comfort for the analyzed manual tasks.