Married women _are_ required to work even if they have enough servants. There are a lot of jobs that are problematic, and some – like Hollywood – might be more problematic for women while still not recommended for men. At the same time, a lot of jobs that are not challenging spirituality much, I think – from WFH software engineer to a neurosurgeon.
Historically, “jobs” often required either muscle strength or travel in dangerous environment, so those were not for women. At the same time, women with property (usually, inherited or gifted by the father) were able to do business – if they chose so, or let their husband to manage it.
Also, some say, that sometimes there is more danger in “heimishe businesses”. An observant person is on guard from non-kosher world, but in the environment where everyone is “kosher”, people can become more relaxed over time.