I agree with the suggestion to in future pay for results, rather than per hour (and then inspect the work like crazy before paying), but I would certainly think twice before hiring this individual. I would also pay the girlfriend directly for her work, rather than giving him money for her.
If you care about the nephew and think that he’s capable of turning over a new leaf, I would suggest telling him that if he ever wants to work for you again, you’re going to give him a feedback session (perhaps at a nice restaurant to take some of the sting out of it), you’d like him to take notes, and you’d like him to explain to you after the feedback session what he’s learned from the experience. Here’s a possible list of items (and don’t write it down for him–you don’t want something in your own handwriting or from your email account to circulate on that side of the family). Here’s an incomplete list of his infractions:
- Bringing along an extra person without having gotten permission (what if she’d been hurt on the work site?).
- Expecting the extra person to be paid, without having gotten an agreement.
- Not staying on task.
- Trying to get a big job without first demonstrating his competence and work ethic at the little job at hand.
Explain that if he can’t mend his ways, you don’t think he will be working for you again and you will be unable to recommend him to others. You might want to mention that conversely, if he does turn over a new leaf, you would be more than happy to hire him again and recommend him. Also explain that if he badmouths you to the rest of the family, you will not hire him again, and you will give him a bad reference if anybody asks. Tell him that he’s young, he’s just starting out, and it’s not a bad time to be making mistakes, but never make the same mistake twice.
Whoever’s blood relative he is should be the one doing this, as blood relatives are more easily forgiven. I understand fully if you decide to skip that conversation, but it could be very helpful to him.