Over dinner with an anesthesiologist friend, we discussed his new job -specifically his "on call" schedule. He explained that he needed to get one of his partners to take his next day on call, but that it shouldn't be a problem. In fact, he said that his partners vie for these call days. I was perplexed because this had not been my experience, so I asked him to elaborate. He said that the doctors in his group get paid according to how much they work, so they compete for extra call days.
In his former group, everyone was paid the same amount, regardless how much they worked. Hence, no one wanted extra call- it was a burden, and there was no incentive to work harder. By mid-afternoon, doctors attempted to remain inconspicuous so that they could slip out of the hospital unnoticed. In his new group, people volunteer to stay late and want to be sure that there are no patients still waiting for surgery before they call it a day.
There can be no better example illustrating the differences between a system which rewards hard work and personal responsibility versus one where all incentives are removed. Obamacare is emblematic of a system which destroys incentives to work and the reason why over 70% of physicians oppose it.