PRN Staff (Per Diem Healthcare Workers)

PRN staff are healthcare workers who pick up shifts as needed instead of working a fixed schedule. PRN comes from the Latin pro re nata, meaning "as needed," and many employers use it interchangeably with per diem. Hospitals, clinics and home care agencies use PRN staff to cover vacations, sick calls and busy periods.

A PRN worker is usually still your employee, with a license to verify, a file to complete and a manager. That makes PRN staffing an employment and compliance question as much as a scheduling one.

How is PRN different from per diem, float pool, agency and part-time?

Employers often use PRN and per diem for the same arrangement. Some draw a line, treating PRN as working with no guaranteed hours and per diem as pay by the day or shift. Check how your own policy defines each term and use it consistently.

Do not confuse healthcare per diem with travel per diem, the daily allowance for lodging and meals. That is a different topic with different tax rules.

Are PRN staff employees or independent contractors?

Most PRN staff are W-2 employees. Some employers engage them as 1099 independent contractors, which carries misclassification risk. The Department of Labor says employers are responsible for determining whether a worker is an employee under the FLSA, and misclassified workers can miss out on minimum wage and overtime protections.

A label or a flexible schedule does not decide the question. The actual working relationship does. DOL published a final rule on classification effective March 11, 2024, and its approach can change, so check current guidance and ask counsel before using 1099 status for clinical staff.

Do overtime and benefits rules apply to PRN staff?

Overtime does for any nonexempt PRN employee. Federal law requires at least one and one-half times the regular rate for hours over 40 in a workweek, and the regular rate generally includes all pay for the work, not just the base hourly wage. Say a PRN nurse works 44 hours at $40 an hour and earns a $100 nondiscretionary shift bonus. Total pay is $1,860, so the regular rate is about $42.27, and the overtime premium is about $84.55.

Benefits depend on your plan terms and hours. Under the ACA, full-time means an average of at least 30 hours of service a week or 130 a month. For variable-hour staff, the IRS describes a look-back measurement method, which counts hours over an earlier measurement period to set status for a later stability period. Many PRN staff stay under the threshold, but you only know if you track hours. Check current rules before building your measurement periods.

What must PRN staff complete before their first shift?

The same pre-start requirements as any clinical hire. These usually include employment and tax forms, license verification, background screening, health and immunization records, required certifications such as BLS, and facility compliance training. Exact requirements depend on your state, setting and payers.

PRN workers often cannot see their own expiration dates, because they are not on the unit every week. Track renewal dates centrally and block shift sign-up when a license or certification lapses. HR Cloud's article on onboarding for non-traditional nursing schedules covers PRN onboarding in more depth.

How do you keep PRN staff engaged?

PRN staff are easy to lose because many work for several employers and have little reason to prefer yours. Give them the same access as everyone else: the schedule, policy updates and unit announcements, on their phone. Tell them what changed since their last shift before they walk onto the unit.

Offer predictability where you can. Post open shifts early, pay on time, state any minimum-shift expectation in writing, and check in monthly. Ask who wants more hours and consider converting willing PRN staff to part-time or full-time when you have steady vacancies.

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Frequently Asked Questions

Q: Do PRN staff earn a higher hourly rate?

A: Many employers pay PRN staff a higher hourly rate in return for no guaranteed hours or no benefits, but there is no rule that requires it. Set the rate in the offer letter and review it against local market pay.

Q: Can PRN staff work for more than one employer?

A: Usually yes, unless a written agreement restricts it. Keep your own complete credential file for each PRN worker, and do not assume another facility's checks satisfy your requirements.

Q: How is PRN different from being on call?

A: On call usually means the worker must stay reachable and ready to report. PRN usually means the worker chooses which offered shifts to accept. Whether on-call time is paid depends on how restricted the worker is, so check the wage rules.

Q: How do you move a PRN employee to part-time or full-time?

A: Update the status in your HR system, issue a new offer letter with the pay rate and schedule, and open benefits enrollment according to your plan terms. Review the ACA hours measurement for that employee at the same time.

Q: What should a PRN agreement say?

A: It should state the employment status, pay rate, any minimum-shift or availability expectation, how shifts are offered and cancelled, and the credentials the worker must keep current. Have counsel review the template.

Q: Do PRN staff get paid sick leave?

A: Some state and local paid sick leave laws cover part-time and as-needed employees. Check the rules in each jurisdiction where your PRN staff work, because coverage and accrual terms differ.