Abstract.We have investigated the impact of men's and women's migration histories on their occupational achievement. Compared with previous work, our operationalization of migration histories is much more detailed: we include not only the distinction between onward and return migration, but also the crucial aspects of the destination and short-term versus long-term effects of migration. Using retrospective survey data for the Netherlands and a least-squares regression model of socio-economic status, we explain the socio-economic status of men and women in a given year from the migration history up to that year, controlling for other factors known to influence socio-economic status. Support was found for the hypothesis that migration has a positive long-term impact on men's occupational achievement. Only multiple migrations affect women's occupational achievement significantly, in a positive way.