A man reaches for his Mega Millions tickets hours before the draw of the USD 1 billion jackpot, at the Bluebird Liquor store in Torrance, California on October 19, 2018. Mark Ralston | AFP | Getty Images

"Strength in numbers" doesn't apply to Tuesday's $1.6 billion Mega Millions jackpot. Experts say problems can stem from joining an office pool. The odds of winning the headliner prize stand at 1 in 302,575,350. Joining forces with coworkers only marginally increases your chances, and can create logistical and legal headaches should you be lucky enough to win. "The main benefit of joining a pool is the camaraderie," said Jason Kurland, a partner at Rivkin Radler, a law firm in Uniondale, New York. "I get that part of it, but I think that's the only pro. Most people don't do [pools] the right way." Here's how to smooth the process:

Keep good records

Create a document listing all of the members of the pool, as well as photocopies of all the tickets in the pool, Kurland said. That makes it clear who's in the pool, and which tickets belong to the group (versus say, the pool organizer). "There are a lot of litigations where people didn't clearly outline the process," Kurland said. Circulate those pool agreements and details via email before the drawing, so that the time and date are documented, said Rogge Dunn, founder of the Rogge Dunn Group, a law firm based in Dallas.

Set some ground rules

Decide in advance how you'll split the winnings, if you're buying multiple rounds of group tickets and have different participants in each. Dunn said he has seen lawsuits stemming from such situations, where winners squabble over what's a fair share for someone who jumped on the bandwagon in a later round, versus someone who contributed to all rounds of ticket purchases.

Plan a claims strategy