Q. We have a few employees who started working for us more than 20 years ago, before the I-9 rules took effect. I don't have an I-9 on file for these folks. Should I? —S.I., New York
A. No, you're in the clear. An employer must have a Form I-9 on file for all current employees other than those hired prior to Nov. 6, 1986, when the I-9 law took effect.