 Andriana Bellou and Emanuela Cardia promote a similar argument, but they claim women who entered the labor force during the Great Depression crowded out women who participated in the baby boom.Glenn Sandström disagrees with both variants of this interpretation based on the data from Sweden showing that an increase in nuptiality (which was one of the main causes of an increase in fertility) was limited to economically active women.He pointed out that in 1939 a law prohibiting the firing of a woman when she got married was passed in the country.