Treatment efficacy will be tested both at work and in the motion lab. In the lab, 3D kinematic measurements and fingertip forces relevant to typing while entering a standard text will be measured. At the work site, anthropometric and measurements, work station measurements, posture observation and questionnaires about, psychosocial status, function and pain level will be filled The preventive program will be performed at the workstation after the preliminary data collection phase. The program will consist of one group meeting at the workplace for all employees participating in the study, and individual instruction at the workstation, including 3-6 meetings for the two research groups. Data will be collected before and after the intervention program.