fast worker

noun Informal.
  1. a person who is quick and shrewd in gaining personal advantage: A fast worker, he soon knew everyone who had any pull.
  2. a person who charms or fast-talks members of the opposite sex easily.

Origin of fast worker

First recorded in 1920–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018