My local (central Ohio) umpire association policy is:
- Full pay for any game actually started, whether it goes one inning or the full time limit.
- Full pay if the umpire is present and the game in any way results in a forfeit.
- Full pay for working a resumed game that was previously started and suspended at any point, then rescheduled for a later time or date.
- No pay for any games that were rained out, cancelled or otherwise not started or played.