rr,

check the legalities for 'piecework'. since we are a licensed industry, you can't truly do piecework to an unlicensed worker.

when doing flat rate, you are paying an hourly rate (including all applicable taxes and benefits) sometimes it's as a percentage of the job price, sometimes as a negotiated hourly rate.

but true piecework, with a 1099, won't fly in NJ, unless the worker has a license and insurance of their own.

good luck.