There are some employment law mistakes employers — by no fault of their own — find it impossible to avoid. Complete FLSA compliance is one example, as Jon Hyman points out over at the Ohio Employer’s Law Blog. I-9 compliance seems to be another. I’ve just completed an I-9 audit for a client. Whew did I catch a lot of mistakes! They’re little (employee signed in the wrong place, employer forgot to date, copy of renewed visa stapled to I-9 but form still lists expired date) and easy to fix. But if ICE comes knocking before you catch them, you’re looking at a big chunk of change. Why take that chance?