“Last Exit to Springfield” is the seventeenth episode of Season 4. It aired on March 11, 1993. The episode was written by Jay Kogen and Wallace Wolodarsky while Mark Kirkland directed.
Homer finds himself filling in for the Springfield Nuclear Power Plant’s union leader when it comes time to negotiate their new contract with Mr. Burns. Homer is a tough negotiator, despite not knowing the first thing about union organizing, and forces Burns to accept the union’s demands on the condition that Homer be removed as leader.