Themes
Workin' 9 to 5, what a way to make a livin'.
— Dolly Parton

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The lyric calls a standard working day a rather poor way of earning a living, in a tone that mixes weary irony with a shrug. The phrasing sets fixed hours and routine against the idea of real living, so the complaint sounds both familiar and lightly sardonic.
Context reviewed