The personal or underground secrets or personal business of co-workers or the entire work environment. People who know peoples work laundry are basically those who know their dirty laundry, but that of working area or corporate.
Jean: Man, supervisor James is a fucking crack-head I swear...he acts like one...
Marlow: Man why you spreading James work laundry? Janitor Bill and Pizza boy A.D. already head he was a crack head!
A.D.: Did you hear about Supervisor Heather? She slept with that one guy who orders the same chicken-bacon-club sandwhich everyday.
Sophia: Damn, everyone knows her work laundry..