When people get what they deserve (be it good or bad), that's justice. When justice is served, it's good for all parties involved.^
If the employees did not deserve the money (i.e., they really did not have a hand in earning it, and deserve only their previously contracted salary), and Notch gave this windfall to them anyway, that is both unjust and unselfish on Notch's part. In that case, Notch simply loses. His life, which is short - as every life is - is now made all that much shorter, less happy; even though his choices, apart from the unjust giving, warrant better and more.
Of course, simply receiving such a windfall itself isn't necessarily immoral. That depends on exactly how wisely the recipient uses the money, and how successful he is in doing so. In some instances, a recipient isn't good enough to handle such a windfall, and literally blows it on things that harm him. In other instances, he is good enough, and benefits. There are stories about lottery winners that go both ways to illustrate my point.
^At first glance you might not think this is true, but it is. It's easy enough to see that justice is good for the good, but what about bad people? Justice is good for all - even criminals evading it. Bernie Madoff stated in an interview that getting caught and prosecuted was a relief:
"For Madoff, prison offers a measure of relief. A man — and even a monster — who has put his greatest fear in the past is, in some way, a happier man, no matter what else has occurred."
