"Local Brothel" joke

A dedicated shop steward was at a convention in
Las Vegas and decided to check out the local
brothels.
When he got to the first one, he asked the
madame, "Is this a union house?"
"No, I'm sorry, it isn't," said the madame.
"Well, if I pay you $100, what cut do the girls
get?" he asked.
"The house gets $80 and the girl gets $20."
Mightily offended at such unfair dealings, the
man stomped off down the street in search of a
more equitable shop.
At the second one, he asked the madame, "Is this
a union house?"
"No, I'm sorry, it isn't," said the madame.
"If I pay you $100, what cut do the girls get?"
he asked again.
"The house gets $80 and the girl gets $20."
Again offended, the man stomped off down the
street in search of a more equitable shop.
His search continued until he finally reached a
brothel where the madame said,
"Why yes, this is a union house."
"And if I pay you $100, what cut do the girls
get?" he questioned. "The girls get $80 and the
house gets $20."
"That's more like it!" the man said. He looked
around the room and pointed to a stunningly
attractive redhead. "I'd like her for the
night."
"I'm sure you would, sir", said the madame while
gesturing to a grotesque woman in her seventies
in the corner, "but Ethel here has seniority."