How many more pop songs feature or prominently mention providers or the profession?
I can think of at least one other: “picking up hookers, instead of my pen, I let the words of my youth fade away”
Who else but Willie.

And this list didn't even include stripper songs; my favorite being "Tittie Dancer"

So instead of actually turning on our brains, we just push a button and Google tells us everything.  
Why even have human memory anymore.

How did I forget this!  
http://www.youtube.com/watch?v=Nr-HFfRz1IE
The Plugz, New Wave Hookers theme song, 1985
(written just for the movie!)

Rolling Stones "Honky Tonk Women"
The Doors "LA Woman" ("or just another lost angel in the city at night")
Green Day "Basket Case"

Lady Marmalade by Patti Labelle

Newcastle Brown, I'm tellin' you, it can sure smack you down
Take a greasy whore and a rollin' dance floor
It's got your head spinnin' round

...Bathtub Gin of course. Nice verion here from 8.7.15 from Cuyahoga Falls, OH.
https://www.youtube.com/watch?v=ViY91TpBLVg&list=RDViY91TpBLVg&start_radio=1&rv=ViY91TpBLVg&t=2

But anyhoo, here's my personal fav by Eno, no less:

Not really, Phish much more funky than the Dead ever were...but it's easy and lazy to lump the two bands together.

I mean, really, who gives a shit?  
Oh, right. You do.

I shall do as I please LOL!

“Fire Down Below” Bob Segar.

"Raised On Robbery."
"I'm a pretty good cook
Sitting on my groceries
Come up to my kitchen
I'll show you my best recipe
I try and I try but I can't save a cent
I'm up after midnight, cooking
Trying to make my rent
I'm rough but I'm pleasin'
I was raised on robbery"

All the Girls Love Alice

"You don't have to put out the red light"

Donna Summer, Bad Girls and maybe, She works hard for the money!

Sorry for the late entry, but I think it’s a winner. “Love For Sale” was written by Cole Porter in 1930. Recorded by many artists since then, as recently as last year as a duet (Tony Bennett and Lady Gaga).

I was just going to say Roxanne by the Police. Probably the most well known song about prostitution of all time

Of course since I live a few miles from the place I had to recall Tom Waits and “Ninth and Hennepin”…

at least get the headline right. Lol    Then he bitches out Laroche for providing a good list.  WTF?

Asking only workman's wages
I come looking for a job.
But I get no offers,
Just a come-on from the whores on Seventh Avenue.
I do declare there were times when I was so lonesome
I took some comfort there

So many major songs in that genre that deal with the profession.  

Why not.  The more the merrier.

And  “Ain’t no rest for the wicked” by cage the elephant.