A dedicated union steward from a major building company was attending a 
convention in Sydney and, as you would expect, decided to check out the 
local brothels.  

 Arriving at the first one, he asked the Madame, "Is this a union house?"

 No," she replied, "I'm sorry, it isn't."
   
 "Well, if I pay you $100, what cut do the girls get?"
 
 "The house gets $80 and the girls get $20."
   
  Mightily offended at such unfair dealings, the man stomped off down the 
street in search of a more equitable, hopefully unionised shop.   
     
  His search continued until finally he reached a brothel where the Madame
responded, "Why yes sir, this IS a union house."  

  "And if I pay you $100, what cut do the girls get?"
  
  "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, then, gesturing to a 
overweight, middle aged woman in the corner she said, "but Ethel here has 
seniority."