
Per diem employees, who are typically paid a daily rate rather than a salary, are generally classified as non-exempt under U.S. labor laws. There is no strict federal limit on hours they can work, but overtime rules apply if they exceed 40 hours per week. Employers may set daily or weekly schedules, and state labor laws may impose additional restrictions.

The number of hours a per diem employee can work is often determined by the employer based on staffing needs. Since per diem workers are called in as needed, they may work a few hours in one shift or a full day. Flexibility is a key feature of per diem employment, allowing both employees and employers to adjust hours according to workload and availability.

Per diem employees should consider personal capacity and health when accepting shifts. While there may be no strict limit on daily hours, working too many consecutive days or long shifts can lead to fatigue. Balancing assignments, taking breaks, and tracking cumulative weekly hours ensures sustainable work without violating employer policies or labor regulations.


