If you look at some of the trades and more artisinal professions (plumber, electrician, hvac, welding, jeweler for some examples), the top matches are often thi

If you look at some of the trades and more artisinal professions (plumber, electrician, hvac, welding, jeweler for some examples), the top matches are often things like "non-medical secretary", book-keeping and accounting, office managers, retail supervisors, etc. That suggests to me that there's still a lot of cases where they've got their spouse running the office or the business end of a small business. That was almost a stereotypical arrangement for couples of my parents' generation.