Yes you are right. Your labor along with your fellow employees must pay for all the overhead including employer's share of the FICA. Your labor also pays part of the rent, the leased vehicles, the bank interest, and numerous other expenses. Your boss, however, was the one who risk his money and started the business. If the business fails, he goes bankrupt - not you. It's a great partnership and he deserves your thanks as much as you deserve his.