A similar survey had already been conducted in June 1977 (Mikrozensus MZ7702). The survey program in 1977 contained only the field of change of residence, apart from questions on the job location. This time, in addition to questions on commuting, the question program follows the one of the population census (transport, time needed to get to work, etc.). The questions on change of residence should provide information on medium-term changes in the fields of immigration, migration between the states and the influence of various factors, for instance the employment situation. The questions on commuters, i.e. on the location and accessibility of the work place, should tell if, since 1981, more employees work outside their residential community.