Mobilization and participation of trade union members in actions regarding CAO negotiations 1978-1979. Workers ( union-members ) at three sites of multinational chemical industry AKZO were interviewed during 1978 / 1979 negotiations regarding wage and job agreements. The interviews focused on ( 1 ): Their knowledge and opinions, both in general as with regard to the specific stages of the negotiations. ( 2 ): Their relation to the labour union both in general as with respect to specific union viewpoints, demands or actions at hand. ( 3 ): Their willingness to be mobilized for actions. Key words: income differences / economic position of workers / working conditions / workers participation / ( causes of ) unemployment / tasks of labour-union / sense of efficacy of socio-political actions / working in shifts / sources of information / participation in labour-union activities / CAO ( collectieve arbeidsovereenkomst ) / APO ( arbeidsplaatsen overeenkomst ) / ATV ( arbeidstijdverkorting ) / reduction of working hours / quality of labour. Background variables: basic characteristics/ income/capital assets/ education/ readership, mass media, and 'cultural' exposure/ organizational membership