Partner choice and women's paid work in Sweden. The role of earnings

Recent observations of higher rates of labour-market activity among women w ith a high-earning spouse and widened household inequality have spurred res earch interest in earnings homogamy and in the effects of own and spouse's earning on female labour supply. This article studies trends in earnings ho mogamy among married and cohabiting parents and in the effects of own and s pouse's earnings on mothers' time in employment and non-employment in Swede n. We analyse, first, correlations between spouses' earnings and, secondly, effects of time-varying own and spouse's earnings on mothers' transitions between part-time and full-time work, on their exits from and re-entries in to employment, and on their exits from parental leave over the years 1968-9 2. We use individual life histories from the 1992 Swedish Family Survey com bined with longitudinal information on earnings from the national taxation register. A unique aspect of this data-set is that it has accurate longitud inal earnings information for both married and cohabiting spouses, includin g former spouses. We find that mothers' own earning have a larger and more significant impact on their labour-market transitions than spouse's earning s and that the impact of the latter has actually declined over time.