The suggestion that workforce employment is unhealthy for women is ridiculous, it is buffoonish, and it is the stuff of moonbeams.
We do need to get the data straight, though:
PBS: Working Women
1900 percentages of women working outside the home:
33% Widowed, Divorced or Separated
HOWEVER the percentages of working married women has steadily increased since 1900, which POSITIVELY CORRELATES with the SIMULTANEOUS INCREASE IN LIFE EXPECTANCY.
THEREFORE there is no case for claiming that workforce employment reduces married female life expectancy.
On the other hand the pre-WW2 workforce employment rates were steady for single women and for widowed, divorced or separated women, so the soundest conclusion might be that workforce employment makes no significant difference in female life expectancies.