Illness of people leads to unplanned and un- expected time off work resulting in reduced production output and service performance, additional costs to compensate this reduction and continued salary payment. Investigations in various EU countries have shown that about 20% to 30% of general illness is work related with no direct link to events like accidents at work or industrial diseases. Over the last decades, it has been possible to lower the number of accidents at work gradually by applying or introducing better technical safety means and technologies. The number of people employed in the traditional industrial branches has been decreased whereas the number of people employed in offices or services providing branches have been increased. For many people, the occupa- tional exposure has changed from items having an physical impact to mental items.   Many companies have implemented flexible work time regimes. New, first of all psycho- logical and social factors influencing people's health and performance have become more important. Some keywords are: • Stress at work, • Burn-out syndrome, • Harassment at work. Engaged, motivated people in a good state of health and feeling comfortable at work become a competition benefit. Thus, more and more companies implement general health preven- tion measures to make work healthier and on the other side, to give health information and to promote a health focused behaviour and lifestyle of people.