Diseases of the support-motor system are the most common reason for work disability. They cause not only personal suffering and loss of income but also represent considerable costs for businesses and the national economies of individual countries. One of the important indicators of the incidence of serious health damage from work is the occurrence of reported diseases from professions and other work-related health damage. Even though the mentioned diseases have a rising tendency, it is possible to avoid them by assessment of work activities, introducing preventive measures and controlling the effectiveness of measures taken. The article presents an example of ergonomic risk assessment for working with loads as a means of prevention.