The integration of employees with changing capabilities and productivity levels is becoming an issue for companies against the background of demographic changes in the workplace. After defining the term and identifying the group of employees with changing capabilities and productivity levels, the issue is integrated in management concepts i.e. in human resources, health, diversity and disability management. There follows a discussion on the integration of employees with changing capabilities and productivity levels using the models for integration, separation, flexibilisation and in-sourcing/out-sourcing. The discussion is based largely on the "Work2Work" project. Conclusions are drawn from this project for other companies.