They also desire the happiness of others. They try to give people something they want, whether it is a good meal, quality clothing, sturdy housing, or reliable letter delivery. In a market economy, the jobs of just about everyone pass this test. No one is forced to take a job. Capitalists could quit investing, bankers could quit lending, and workers stop working at any time.
Most people face an array of alternatives of how to use their talents in the market.
They have chosen to support themselves and perhaps their families by serving others. Furthermore, the very existence of our social safety net means workers in America volunteer to be responsible people, to earn a living by the sweat of the brow. All trade in a market economy is voluntary and mutually beneficial. Thus both parties end up benefiting from the transaction. The only trait of Americorps that distinguishes it from charity, jobs, or entrepreneurship in the private sector is that it is sponsored and run by government.