If you have watched Job Switching, you must have noticed several things. First, both Lucy and Ethel are housewives though neither of them has any children at the moment. Yet, their staying home is still shown as the normal arrangement. It's suggested that neither of them worked before they married, either (Have you ever tried to make a living?) which means that they got married right after school/college and probably belonged to middle class background.
Working women later in the episode are shown as masculine/unattractive (too plain to catch a good husband hence they have to work school of thought). Interesting enough, in another episode which features a two-income couple (the Fosters) it's heavily hinted that Grace Forster has a certain "reputation".
Housework is shown as " real work" and Ricky and Fred learn the hard way that keeping house demands more than just "lying around on the sofas" and it also proves that this stereotype already existed back then. And yet, the apartments of both are tiny by the modern standards (one bedroom). You can also see the importance of home cooking, not only dinner, but breakfast, too!
Lucy wears trousers at home in the first scene, but she puts on a more formal outfit when she goes out to work and so does Ethel. Ricky and Fred's behaviour changes considerably when they switch to being "housewives". While in the beginning of the episode Ricky behaves in an authoritative manner he starts sounding submissive when asking Lucy what sort of job she's going to take. This whole episode proves once again that the husband's authority was tied up to his responsibility to provide an income.
In the end they all decide to go back to the "traditional way" of doing things which is shown as the victory of common sense. And though Lucy could do a much better job of saving money and managing her finances, it was never implied she had to engage in "home businesses" of any sort. In fact, the series heavily ridiculed this idea in more than one episode which is probably the reason so many "fundie" Christians obsessed with their women making a dollar while homeschooling 12 kids and grinding their own flour dislike it.
If you have any more ideas or observations, feel free to share them in the comments section.