Communication and contacts in organizations Having a blue- or a white-collar position / having managerial tasks / travelling time / travelling with colleagues / age of colleagues: younger or older than 45 years / sexratio of organization / cooperation with colleagues / topics of conversation with colleagues / type and frequency of contacts with colleagues, and with r.'s manager / satisfaction with job / absence due to illness Background variables: basic characteristics/ place of birth/ household characteristics/ occupation/employment/ education