Oh, yes they could. The easiest route would simply be to refuse me referrals. If I had a golden parachute deal, it would be invalidated by such an action. Any

Oh, yes they could. The easiest route would simply be to refuse me referrals. If I had a golden parachute deal, it would be invalidated by such an action. Any vested stocks I had would be in jeopardy. They can try to blackball me. They can cut off insurance benefits unexpectedly. And all that before lawyers get involved... If you do work on a personal email, your employer may later demand access to those emails. So don't do it.