Casting about for a semantic escape hatch

Overheard on the bus this morning:

Tooting undergraduate 1: When I graduate I'm gonna become a social worker, innit

Tooting undergraduate 2: Why iz dat?

TU1: Coz you get da key worker housing off da government innit

TU2: Woz dat?

TU1: Iz loads of free cash. You buy a house well cheap, sell it an make a fortune man

TU2: Then you moov to Chelsea, innit

TU1: Yeah, man.

That'll be where my 25 grand stamp duty will be going then. Key workers my arse.