Mothers' Labor Supply and Immigration: Evidence from the Swiss Border Opening

Does immigration affect native men and women differently? We study the case of the Swiss border opening to workers from the European Union starting in 2002 and show that while the effects do not differ for young or older men and women, there are stark differences for the age group between 30-39. We find that the gender difference in this age group is driven by young mothers leaving the labor market at higher rates after immigration. We reason that the dropout is driven by a faster pace in the labor market with more hours worked, and fewer part-time jobs.