Look, someone who doesn't have a job will lower his/her price until he/she gets a job. If you are really on the verge of starvation you will become willing to work for $1, and someone will probably become willing to hire you for that little. Just like any other market, price will fluctuate and equilibrate supply and demand, clearing the market. It's just that in the short run there is price inflexibility, so the market temporarily goes out of whack. In the long-run wage is only determined by worker productivity (which is function of amount of capital and technology level), and anyone who wants a job can have one, though it may not be as high paying as she wants.