I guess I am more middle of the road here... I would have him get a part time job, so that he is out, active, and learning to be responsible... but I would make it part time so that he does have time to do the things he enjoys and the relax him. It is summer after all, and ya know sometimes it is ok to just enjoy summertime! I worked full time every summer from the age of 15, not because I had to but because I wanted to. I loved it, but I remember days where I just wished I could lay around and just be a kid with my friends. So maybe shoot for him getting a part time job and I would also put him in charge of some household duties like mowing, or watering, etc...
Helping MOMS work from home!