Work and money

On the way to the doctor's office, we were discussing work.
Gwen: Does 'work' go home to her kids in the evenings?
Me: No, work is really a building, were many people do important things then get paid and go home...
Gwen: Do they get paid coins or paper money
Me: Paper money
Gwen: I do not like paper money, as it doesn't fit into my piggy bank.