Green’s Dictionary of Slang

(US) a financial criminal who withholds money from their firm’s profits.

1930		J. Lait Put on the Spot 7: That chiselin’, cheatin’ swill-box skimmer.
1971		E. Wilson Show Business Nobody Knows 42: When the house was winning $100,000 a night, this thievery wasn’t difficult as long as the skimmers were not too numerous or too greedy.
1993		C. Hiaasen Strip Tease 17: Unless one is very good at it, one does not skim from professional skimmers.