Files of surveys done in 1956 to 1991 where collected and the variables related to social mobility are selected and modified in a way to make the comparisons between years and countries easier. administrative data: original names of studies in archives, merge numbers of files, year of original survey / respondent, partner, father, mother: type and years of education/ employment status/ selfemployed or wage earner/ occupation in public service/ nr. of staff/ profession/ ISCO-code of profession/ Erikson, Goldthorpe and Portocarrero Class (EGP10) code of profession/ Standard International Occupational Prestige Scale (SIOPS) code of profession/ International Socio-Economic Index of Occupational Status (ISEI) codes for profession/ religion / respondent, partner: employed or not/ nr. of working hours/ church attendance / respondents first occupation: self employed or wage earner/ occupation in public service/ nr. of staff/ profession/ ISCO-code of profession, EGP10, SIOPS and ISEI codes of profession / head of household / social class of respondent and parents / religious upbringing / ownership of house / voting behaviour / party preference of father and mother Background variables: basic characteristics/ residence/ housing situation/ occupation/employment/ income/capital assets/ education/ social class/ politics/ religion