Live better... work union?

A union boss at a convention in Las Vegas decides to visit a brothel. He asks the madam, "Is this a union house?"

"No, I'm sorry, it isn't." she says.

"Well, if I pay $100, what does the girl get?" he asks.

"The house gets $80 and the girl gets $20."

Mightily offended by such unfair dealings, the man stomps off in search of a more equitable shop. Finally, he reaches another brothel.

The man asks the madam says, "If I pay $100, what does the girl get?"

"The girl gets $80 and the house gets $20."

"That's more like it!" exclaims the man. He looks around the room and points out a gorgeous red head. "I'd like her for the night."

"I'm sure you would, sir," replies the madam, while gesturing towards a 70 year old woman in the corner, "but, Ethel here has seniority."