Effectiveness of an Interventional Intervention in Improving the Work Environment of Nurses and Nursing Assistants in the Hospital

The goal of this interventional study is to evaluate the effectiveness of a training course on a healthy work environment for nurses and nursing assistants in a hospital. The main questions it aims to answer are: * To evaluate the effectiveness of a training course on a healthy work environment * To know the perception of nursing and nursing assistants on what is needed to have a healthy work environment, what elements it should contain and whether it has changed after the course has been completed Participants in the intervention group will receive the training course and the control group will not. Researchers will compare intervention group with control group to see if the training course on healthy work environment is effective.