Best thing to do is this:
1. grab your digital camera and snap off a couple of pics.
Print them out on your home printer...just use regular paper on a color printer...no need to get fancy here. Hopefully the contractor will have some nice signs on the side of his truck...with a phone number.
2. Send pics to your state’s unemployment office, your state tax office and also the IRS. ICE won’t respond to any calls regarding “illegals on the jobsite”.
Do this once a week for a month....same contractor’s pics...just to make sure they get multiple copies.
See how much fun can be had for $10.00 or less?
:)
Now call the guy's competitors and ask them if they are considering suing the crook under the RICO Act.