Checking job candidates including their past – obeying the law and employment history, family situation, living conditions, owning assets and so on,
Checking loyalty of associate/associates including previous businesses, liabilities and financial standing,
Control of the employees during sick leaves (complying conditions of sick leave, working elsewhere during leave),
So called mystery customer service (impersonate a contractor – customer or seller and observation behavior of business representative,
Another untypical – for example business meetings security in matter of elimination cameras and sound recorders.