Mr. Monk Takes Manhattan - S3-E1
Warrick Tennyson: You were the husband?
Adrian Monk: I am the husband.
Warrick Tennyson: Forgive me.
Adrian Monk: Forgive you? This is me...turning off your morphine. [Turns off morphine. Long pause. Monk covers his eyes and begins to cry.] And this is Trudy, the woman you killed...turning it back on. [Turns on morphine].
Answer: The two men are trying to work out a secret deal between them without involving the union, which means the workers' interests aren't being represented and defeats the whole purpose of a union. The mayor would lose labor's support and Cusack's union troubles would just be starting.
Captain Defenestrator