Unless you're Amish and work for yourself or another Amish employer, the US government doesn't recognize any objections to participation unless you don't want to be employed at all.
You can opt out (well, your parents can; you can't rescind participation once you reach the age of majority, unlike every other legally binding agreement your parents enter you into) as long as you never try to make any money. And of course the IRS doesn't allow for the cost of your time and effort, which you can never recover, as an exemption against "income" earned. Time is only worth something in their eyes if it increases your tax burden.
If I'm working, I have zero income, because I'm trading something which is absolutely unrecoverable in exchange for that paycheck. It's too bad so many either fail to understand that or, worse, don't care.