In the UK, the report says an office sweepstake may be treated as a form of lottery unless it fits an exemption.
That last point matters more than it used to. A message in Slack or Teams may feel informal, but if it reaches beyond the relevant workplace group, it could create a compliance problem.
Hybrid working has blurred what counts as the office. That is where employers need structure.
Reports also suggest the regulatory risk may be lower when a pool is run by employees themselves rather than formally by the company. Even then, a business will still want clear boundaries if the activity is happening around work channels and work time.
The safest version is the simplest one.
With this World Cup reportedly expanding to 48 teams and running through to 19 July in New Jersey, interest is only likely to grow. Before the first ball is kicked, and before Mexico and South Africa get the tournament started, the smarter offices will make sure their sweepstake is tidy, limited and compliant.