(NBC) -- Office pools are common ahead of tonight's record-setting Mega Millions drawing.
The New Jersey Lottery Commission is out with some guidelines for anyone who joins an office pool.
They say you should:
- Make sure everyone knows what the rules are by putting them in writing.
- Agree on what happens when a regular pool participant is absent the day money is collected.
- Everyone should have photocopies of the tickets, including the serial numbers on the back.
- Find out where the tickets were purchased, and when.
One piece of advice the Lottery Commission doesn't offer: What does the boss do on Monday when everybody picks the right numbers on Friday.