The Labor Department isn’t saying publicly when it expects to finalize three high-priority regulations that the White House and businesses want issued well before the 2020 election.

The department punted on a timeline for regulations to update overtime pay requirements and limit shared liability for wage and hour violations in its spring regulatory agenda. That’s traditionally the forum for executive branch agencies to deliver their best guesses of the next year’s rulemaking calendar. The uncertainty means businesses and worker advocates planning to comply or possibly challenge the trio of recently proposed regulations will have to wait and see when the...