This episode begins by suggesting it might redeem "Three's Company" for sexism, but then flushed that opportunity down the toilet.
Jack's first job out of cooking school is at a diner, where he's clumsier than usual because his boss (Ellen Travolta) keeps sexually harassing him. He confronts her about it, and she fires him. His friends (sans Susan Somers's "Chrissy" - I'm guessing this is when the contract disputes began) convince him to take the woman to court, and it rolls downhill from there.
The idea of illustrating sexual harassment through one of the most sexist "jiggle" shows in the history of television, with a plot about the MALE lead getting sexually harassed is genius. This episode, however, trivializes it from the beginning, making all kinds of sophomoric jokes about how silly it is for Jack to be complaining, climaxing in, as one might expect, a joke about Jack being gay. It's the same anachronistic crap that makes this show frustrating, because at its heart, as the story of three friends who live together and genuinely care about each other, played by truly talented actors, "Three's Company" is a classic for a reason. The thing is, through the lens of 2015, you just can't help noticing how juvenile and paternalistic much of it is. The gags in this episode are lowbrow, it implies that sexual harassment isn't a big deal, and it ultimately comes to an unsatisfying end. The fact that it sets up like we're going to see something special just makes it worse.
At least it makes me appreciate the times we live in. And if you want a more progressive version of this kind of show, there's always "Friends" and "How I Met Your Mother..."