What type of works council uses what kinds of means of power, with what effects and under which conditions/ typification of works councils from its political ( trade-union ) composition/ typifications of kinds of means of power/ extent of militancy of works councils. Composition of works council / election procedures / functioning of works council / power and conflict handling / recent strikes and councils' position towards it / background variables on industry and personnel. Background variables: basic characteristics/ occupation/employment/ education/ organizational membership