William Frawley's last episode as Bub. Bub is referred to by name numerous times in the subsequent episode "Here Comes Charley", and once more in a later episode in season 5, "Be My Guest", after which he was never mentioned again, just as Mike is never mentioned again after he and Sally get married and move away.
By the mid-1960s, alcohol and old age finally took their toll on William Frawley who began forgetting lines. By the show's fifth season, Frawley was in such poor health that he couldn't pass Desilu's studio's annual health insurance exam, was released from the program and replaced by William Demarest.
The title is based on the old proverb: "A man may work from sun to sun but a woman's work is never done".