It's my impression that religious women are more oriented toward family than irreligious women. Traditional religion focuses on the importance of motherhood over worldly ambition.
How do we measure occupational ambition? Let's look at occupational prestige and number of hours worked per week. I'll throw in IQ as a control:
Standardized OLS Coefficients, DV = Job prestige (sample size = 7,841)
Church attendance .08*
Standardized OLS Coefficients, DV = Hours worked last week (sample size = 7,208)
Church attendance -.07*
* statistically significant
Interesting. Religious women work more prestigious jobs, but they tend to work fewer hours. They work smarter, not harder.