I'm pretty sure you've never managed me, so don't take this as a personal attack, but nothing makes me more disgruntled than the management announcing that a month of overtime (estimated market cost to me: more than £1500) will be followed by a nice lunch at a fancy restaurant (estimated market cost to the company: less than £50). The two are not remotely comparable, and to think of it as a carrot (or worse, a quid pro quo) when in fact it's much closer to a thank-you for a favour is infuriating.

Your two rules are...minimally adequate, I guess. They're certainly nothing to pat yourself on the back about.