CLEVELAND — Hospital systems that spent the post-pandemic years trying to wean themselves off travel nurses now face a quieter problem: the same units, fewer contractors, and more overtime among the people who stayed.

Finance committees like the look of the travel line item. It is down sharply from 2022 peaks. What has replaced it, nurse managers say, is a patchwork of extra shifts, delayed elective cases on thin days, and a higher use of float pools that were never meant to be a standing plan.

Starting wages in many metro areas are well above 2019 levels. Retention bonuses have faded. New graduates are entering, but experienced nurses in emergency and intensive-care units remain hard to hire, particularly on nights and weekends.

Unions in several states have made staffing ratios a legislative issue again. Hospital associations argue that rigid ratios close beds when a nurse calls out. Nurses argue that unofficial overtime is already a ratio by another name.

Rural hospitals are in a tighter bind. They cannot match urban sign-on packages, and a single vacancy on a medical-surgical floor can force diversion. A few systems have revived partnerships with local nursing schools that guarantee clinical slots in exchange for a service commitment.

The public sees this as wait times. Inside the building it is a spreadsheet: how many hours can you ask of a tired staff before the next resignation recreates the travel-nurse bill you just eliminated.