Choosing a flexible work arrangement is one of the biggest career decisions a clinician can make. Whether you’re exploring opportunities independently or through a healthcare recruitment agency, understanding the differences between locum tenens, PRN, and per diem roles is essential. While all three offer freedom from a traditional full-time schedule, they differ significantly in pay structure, licensing, taxes, scheduling, and day-to-day responsibilities.
This guide breaks down each option in plain language, clears up the confusion between PRN and per diem, and gives you a framework for deciding which path fits your career stage and goals.
Why Flexible Healthcare Work Is Growing
Flexible clinical work has expanded rapidly over the past decade. Several workforce trends are driving this shift:
- Clinician shortages. HRSA’s Health Workforce Data, Tools, and Dashboards indicate ongoing primary care workforce shortages, particularly in rural and underserved regions where healthcare access remains limited.
- Burnout and retirement. Many experienced physicians and nurses are scaling back full-time commitments rather than leaving the workforce entirely.
- Seasonal and geographic staffing gaps. Facilities in tourist destinations or areas with seasonal population shifts rely on temporary staff to cover demand swings.
- Outpatient care expansion. As more care moves outside hospitals, facilities need staffing models that flex with patient volume.
- Workforce flexibility expectations. Younger clinicians increasingly prioritize schedule control alongside compensation.
What Is Locum Tenens?
Locum tenens work means temporarily filling a clinical role, often at a facility that has a staffing gap due to leave, turnover, or seasonal need. It’s most common among physicians and advanced practice providers, though it exists across specialties.
How it typically works:
- Assignments range from a few days to several months, and sometimes longer for hard-to-fill specialties.
- Clinicians usually work through a staffing agency, which handles credentialing paperwork and connects them with facilities.
- Facilities include hospitals, rural clinics, urgent care centers, correctional facilities, and government health systems.
- Travel is common, though local locum assignments exist too.
- Most locum clinicians work as independent contractors (1099), not employees, which affects taxes and benefits.
- Malpractice coverage is generally provided by the agency or facility, but clinicians should confirm this before accepting any assignment.
- Licensing and credentialing must be completed for each state and facility, which can take weeks depending on the state’s process.
What Is PRN Work?
PRN comes from the Latin pro re nata, meaning as needed. PRN clinicians are typically part of a facility’s internal staffing pool, called on to fill open shifts.
Key features of PRN scheduling:
- PRN staff are usually employees of the facility (W-2), not contractors, though this varies.
- Many facilities require a minimum number of shifts per month or quarter to remain active in the pool.
- PRN does not always mean on-call. Many PRN clinicians pick up posted shifts rather than waiting for last-minute calls.
- Cancellation policies vary; some facilities allow shifts to be canceled with notice, while others penalize late cancellations.
- Common departments include emergency, med-surg, ICU, and behavioral health, where volume fluctuates.
- PRN staff generally do not receive full benefits, though some hospitals offer limited perks like differential pay for undesirable shifts.
PRN is often a good entry point for clinicians who want flexibility without leaving employee status entirely.
What Is Per Diem Work?
Per diem literally means for the day. Per diem staff fill single-day or short-term staffing gaps, similar to PRN, but the term is used differently across employers.
How facilities use per diem staff:
- Per diem roles may be filled directly by the facility or through a staffing agency, unlike PRN, which is almost always internal.
- Shifts are usually offered close to the date of need, requiring quick availability decisions.
- Per diem clinicians are expected to maintain a certain level of availability, though requirements vary by contract.
- Agency per diem work can span multiple facilities, giving clinicians broader exposure to different work environments.
PRN vs Per Diem: Are They Actually Different?
This is where most confusion happens, and the honest answer is: it depends on the employer.
PRN and per diem often describe the same type of shift-based work, but PRN usually refers to an internal hospital staffing pool, while per diem more often involves agency-based or facility-direct short-term shifts. Some hospitals use the terms interchangeably in job postings, which adds to the confusion.
Where they’re similar:
- Both are shift-based rather than full-time commitments.
- Both offer schedule flexibility compared to permanent roles.
- Neither typically guarantees a set number of hours.
Where they can differ:
- PRN is more commonly an internal staffing designation; per diem is more commonly used for external or agency-supplied staff.
- Per diem assignments may span multiple facilities; PRN work is usually tied to one employer.
- Benefit eligibility, minimum shift requirements, and cancellation policies vary by facility regardless of which term is used.
Because terminology isn’t standardized across the industry, clinicians should always ask a specific facility how they define PRN or per diem before accepting a role.
Locum vs PRN vs Per Diem: Comparison Table
| Factor | Locum Tenens | PRN | Per Diem |
| Assignment length | Days to months | Ongoing, shift-by-shift | Single shifts to short-term |
| Employment type | Usually 1099 contractor | Usually W-2 employee | W-2 or 1099, varies |
| Scheduling control | High, choose assignments | Moderate, pick from posted shifts | Moderate to high |
| Travel | Often required | Rarely | Sometimes (agency-based) |
| Housing support | Sometimes provided | Not applicable | Rarely |
| Benefits | Rare | Limited | Rare |
| Licensing/credentialing | Per state, per facility | One-time, facility-specific | Varies by agency/facility |
| Malpractice coverage | Agency or facility-provided | Facility-provided | Varies |
| Minimum commitment | Assignment-based | Often required (e.g., shifts/month) | Varies by contract |
| Typical settings | Hospitals, rural clinics, urgent care | Hospital departments | Hospitals, agencies |
| Best suited for | Clinicians wanting variety and independence | Employees wanting flexible hours | Clinicians wanting shift-level flexibility |
Compensation Beyond Hourly Pay
Hourly rate is only part of total compensation. Depending on the role and employer, clinicians may also receive:
- Travel and mileage reimbursement (common in locum work)
- Housing or lodging support for out-of-area assignments
- Licensing fee reimbursement
- Malpractice insurance coverage
- Overtime or call pay
- Shift differentials for nights, weekends, or holidays
- Extension bonuses for renewed assignments
- Limited retirement or health benefits (uncommon, but not unheard of for long-term PRN staff)
These extras vary widely by contract, so clinicians should request a full compensation breakdown rather than comparing hourly rates alone.
Taxes and Employment Classification
Employment classification changes how clinicians handle taxes:
- W-2 employees (common in PRN and some per diem roles) have taxes withheld automatically and may qualify for limited benefits.
- 1099 contractors (common in locum tenens) are responsible for self-employment taxes and quarterly estimated payments, but can often deduct business expenses like travel, licensing, and continuing education.
Worker classification is governed by U.S. Department of Labor guidelines and individual state employment laws (such as California’s AB 5). While physicians frequently qualify as 1099 contractors, APRNs and allied health professionals should verify how their state and staffing agencies handle worker classification.
Licensing and Credentialing
Locum tenens require active licensure in the assignment’s state, plus facility-specific credentialing and privilege, which can take several weeks. Multistate compact licenses can significantly speed up this process for eligible professions:
- Interstate Medical Licensure Compact (IMLC): Offers an expedited licensing pathway for physicians across 40+ participating U.S. jurisdictions.
- Nurse Licensure Compact (NLC) & APRN Compact: Streamlines multistate practice for Registered Nurses and Nurse Practitioners.
Note: While compacts accelerate state licensure, they do not eliminate individual facility credentialing and privileging timelines.
Work-Life Balance Comparison
- Locum tenens offer the most control over which assignments to accept, but travel and unfamiliar environments can offset that flexibility.
- PRN allows clinicians to maintain steady community ties while still controlling hours, though minimum shift requirements limit full flexibility.
- Per diem offers shift-level flexibility but less predictability, since shifts are often offered on short notice.
None of these options eliminate burnout risk entirely, schedule control helps, but workload intensity during shifts still matters.
Which Option Pays More?
There’s no universal answer. Pay depends on specialty, location, demand, experience, and shift type, not just the employment model. A rural emergency medicine locum assignment may pay significantly more per hour than a per diem shift in a saturated urban market, and vice versa in other specialties. Overtime, call coverage, and contract length also affect total earnings more than the base hourly rate.
Which Career Stage Fits Each Option?
- New graduates: PRN is often more accessible since it doesn’t require extensive licensing across states.
- Early-career clinicians: Locum work can provide broad clinical exposure and faster skill-building across settings.
- Mid-career professionals: Any option can work, depending on whether the priority is income, flexibility, or stability.
- Parents seeking flexibility: PRN or per diem often fit better due to less travel.
- Semi-retired physicians: Locum tenens is popular for reducing hours while staying clinically active.
- Career changers or those returning after a break: PRN offers a lower-friction path back into clinical work.
Locum Tenens NP Contracts vs Permanent NP Jobs
Locum NP contracts offer higher scheduling autonomy, variety across practice settings, and often stronger hourly pay, but less job stability and fewer benefits. Permanent NP roles provide predictable income, employer-sponsored benefits, and long-term career growth within one organization, at the cost of schedule flexibility. Neither is universally better, the right choice depends on whether an NP prioritizes stability or independence at a given career stage.
Questions to Ask Before Accepting Any Flexible Role
Before signing a contract, confirm:
- Expected schedule and minimum shift commitment
- Call requirements, if any
- Credentialing and licensing timeline
- Malpractice coverage source
- Travel or housing reimbursement
- EMR training provided
- Cancellation policy for both parties
- Overtime and extension terms
- Benefit eligibility
- Tax classification (W-2 or 1099)
Future of Flexible Healthcare Careers
Workforce flexibility is likely to keep expanding as clinician shortages persist and telehealth adoption grows. Advanced practice providers are taking on a larger share of flexible roles, and digital credentialing platforms are gradually shortening onboarding timelines. These shifts point toward more accessible flexible work, though the pace of change will vary by state and specialty.
Conclusion
Locum tenens, PRN, and per diem work each offer a different balance of flexibility, stability, and compensation. The right choice depends on your career stage, licensing situation, financial goals, and how much schedule flexibility you want.
Reviewing contract terms carefully, not just hourly pay, will help you choose the option that best supports your long-term career goals. If you’re ready to explore flexible healthcare opportunities or have questions about available positions, contact us to learn more about current locum tenens and PRN job opportunities.
FAQs
Do Locum Tenens Assignments Usually Include Housing?
Yes. Many locum tenens assignments include furnished housing or a housing stipend, though benefits vary by contract and facility.
Can Early-Career Physicians Work Locum Tenens?
Yes. Early-career physicians can accept locum tenens assignments if they meet the required licensing and credentialing requirements.
Can Clinicians Work Both PRN and Locum Tenens at the Same Time?
Yes. Many clinicians combine PRN and locum tenens work, provided they can meet scheduling and licensing requirements.
Is Per Diem the Same as PRN at Every Hospital?
No. Some employers use the terms interchangeably, while others define them differently. Always confirm the employer’s policy.
