Most full-time CRNAs work 40 to 50 hours per week, with the exact number depending on shift structure, on-call duties, and whether they pick up extra shifts. That range can stretch higher during weeks with call responsibilities, or shrink for those working part-time or locum tenens contracts. Here’s what the weekly workload actually looks like across different settings.
Typical Weekly Hours
A standard full-time CRNA position lands in the 40-to-50-hour range. The lower end reflects a straightforward schedule with minimal call, while the upper end accounts for the on-call shifts, late-running cases, and add-on procedures that are common in busy surgical centers and hospitals. Some salaried positions build those extra hours into the base expectations, meaning you won’t necessarily see overtime pay for hitting 45 or 48 hours in a week.
Part-time CRNA roles do exist, particularly in outpatient surgery centers and smaller practices, though they’re less common than full-time positions. CRNAs in these roles often work 20 to 32 hours per week on a set schedule with little to no call.
Common Shift Lengths
CRNA schedules don’t follow a single model. The most common shift lengths are 8, 10, and 12 hours, and the one you’ll work depends largely on the facility. Hospital-based CRNAs frequently work 10- or 12-hour shifts. A popular arrangement is three 12-hour shifts per week, which gives you a 36-hour clinical week before any call or overtime. Some facilities, particularly those handling trauma or emergency cases, use 24-hour call shifts where you stay in-house overnight.
Eight-hour shifts are more typical in outpatient surgery centers and office-based practices, where cases are scheduled during normal business hours and the day wraps up more predictably. These positions tend to follow a Monday-through-Friday pattern, which appeals to CRNAs looking for a more conventional workweek.
On-Call Requirements
On-call shifts are one of the biggest variables in a CRNA’s schedule. According to a national survey by the American Association of Nurse Anesthetists, about half of CRNAs take four or fewer call shifts per month. Another 20% work five to six call shifts monthly, and roughly 28% take seven or more.
What “call” looks like varies. In-house call means you stay at the hospital overnight, ready to provide anesthesia for emergency surgeries, obstetric cases, or trauma. Backup or “beeper” call lets you stay home but requires you to arrive at the facility within a set window, usually 20 to 30 minutes, if called in. Weekend call is common in most hospital-based positions and typically rotates among the anesthesia team.
Call shifts add real hours to your week. A 24-hour in-house call shift can mean being awake and working for much of the night, and the survey found that fatigue from call shifts is a significant concern among CRNAs. Whether you get a day off after a call shift depends on your employer’s policy, and this is one of the most important details to clarify in any job contract.
Overtime and Extra Shift Pay
Overtime availability is one reason some CRNAs regularly exceed 50 hours per week. Extra hours come from cases that run long, add-on surgeries after your scheduled shift, and voluntary weekend or holiday coverage. For W-2 employees (those on a facility’s payroll rather than independent contractors), overtime pay typically ranges from 1.25 to 1.5 times the base hourly rate. At a base rate of $120 per hour, that means overtime shifts pay $150 to $180 per hour.
Not every position offers overtime pay, though. Some salaried CRNA roles fold extended hours into the base compensation with no additional pay for going over 40 hours. This makes contract language critical when comparing job offers. Two positions might advertise similar salaries, but the one that expects 50 hours a week without overtime effectively pays less per hour.
Call pay is a separate category. Common models include a flat rate of $300 to over $1,000 per call shift, hourly standby pay combined with per-case compensation when you’re called in, or guaranteed minimums if you end up working cases during your call. Some facilities use a combination of these structures.
Locum Tenens and Contract Work
CRNAs who work as locum tenens (temporary contract providers) have the most control over their hours. These assignments let you choose how many weeks per year you work, how long each contract lasts, and what schedule you’ll cover during that contract. Some locum CRNAs work intensively for several weeks and then take extended time off. Others maintain a steady rhythm of assignments that mimics a traditional schedule.
Contract lengths and shift expectations vary by facility and location. A rural hospital desperate for coverage might offer a locum CRNA a demanding schedule with heavy call, while an urban surgery center might need someone strictly for weekday cases. The tradeoff for this flexibility is managing your own benefits, taxes, and the logistics of travel, since locum assignments can be local or across the country.
What Drives the Variation
Several factors determine where your schedule falls within the 40-to-50-hour range or beyond it. Practice setting is the biggest one: level-one trauma centers and large academic hospitals tend to have heavier call and longer shifts than outpatient surgery centers or pain management clinics. Geographic location matters too, since rural and underserved areas often have fewer anesthesia providers, pushing those who are there to cover more hours.
Your employment model also shapes your week. CRNAs in independent practice or small group practices may set their own hours. Those employed by large hospital systems or anesthesia management companies typically follow a set schedule with assigned call rotations. And personal preference plays a role: many CRNAs voluntarily pick up extra shifts for the additional income, while others prioritize time off and choose positions with predictable hours and minimal call.