a quick/slow/good, etc. worker
B1
someone who works quickly/slowly/well, etc.
Dictionary examples:
Tom's such a fast worker, he finishes his lunch before starting it! (0.0)
He's such a good worker, even his dreams are about spreadsheets! (0.0)
Sarah's such a slow worker, snails ask her for racing tips! (0.0)
He's kind of a slow worker, but he is very thorough. (36.5)