If you're a humanist schoolteacher, it might affect your job because the authorities might be afraid you'd push humanism on students. The humanist philosophy believes we can't know what happens after we're dead, so we should center our interest on what happens while we're alive and make this a better world for future generations. Basically, it rejects all supernaturalism and relies primarily on reason, science, democracy and human compassion. Unitarian-Universalists, for example, are religious humanists, for the most part.
Humanists also consider situational ethics.
You have to look at everything in context. So all these rules we don't believe should be absolute. Even among clergy I get a lot of negative stereotypes. I think a lot of clergy feel morality has to stem from a supernatural source, that humans are not capable of instituting moral codes. We just do not believe it.