Background: Despite numerous initiatives to improve the working environment for nursing aides, musculoskeletal
disorders (pain) is still a considerable problem because of the prevalence, and pervasive consequences on the
individual, the workplace and the society. Discrepancies between effort and effect of workplace health initiatives
might be due to the fact that pain and the consequences of pain are affected by various individual, interpersonal
and organizational factors in a complex interaction. Recent health literacy models pursue an integrated approach
to understanding health behavior and have been suggested as a suitable framework for addressing individual,
organizational and interpersonal factors concomitantly. Therefore, the aim of the trial is to examine the
effectiveness of an intervention to improve health literacy (building knowledge, competences and structures for
communication and action) at both the organizational and individual level and reduce pain among nursing aides.