Migrants migration history / geographical mobility / evaluation of housing conditions / housing environment, facilities / occupational history, mobility / job satisfaction / evaluation of characteristics of job / family relations and contacts / motivation to migrate / leisure possibilities / perception of new situation before migration / how one found new job / general preference to live in village versus centre of big city / preference for living in certain regions of the country / present situation compared to the previous one. Non-migrants special questions on evaluation of present housing / job / environment situation and feeling in relation to it / image of some regions in the Netherlands / tendency to migrate. Background variables: basic characteristics/ residence/ housing situation/ household characteristics/ occupation/employment/ income/capital assets/ education/ organizational membership