Most full-time CRNAs work between 3 and 5 days per week, depending on their shift length and practice setting. A national survey of CRNAs found that about 45% worked 4 days or fewer per week, 43% worked 5 days, and roughly 11% worked 6 or 7 days when on-call shifts were included.
How Shift Length Determines Your Weekly Schedule
The number of days you work as a CRNA is largely dictated by whether your facility runs 8-hour, 10-hour, or 12-hour shifts. Each format hits roughly 40 hours per week but spreads those hours across different numbers of days.
CRNAs on 10-hour shifts typically work 4 days per week, which is one of the most common arrangements. Johns Hopkins, for example, schedules new CRNAs for four 10-hour shifts during their orientation period. Those on 12-hour shifts work fewer days but on a rotating pattern: three 12-hour shifts one week (36 hours), three the next, and then four 12-hour shifts the following week (48 hours), averaging out to about 40 hours. That means you might have 4 days off one week and only 3 the next. CRNAs on traditional 8-hour shifts work the standard 5-day week.
The 12-hour rotation is popular in hospitals with round-the-clock surgical and trauma coverage. The tradeoff is longer, more intense days in exchange for more consecutive days off. The 10-hour model splits the difference and has become a common default at many academic medical centers.
Average Weekly Hours
Full-time CRNAs average somewhere around 38 to 45 hours per week, though the exact number varies. A workforce study published in The Journal of Nursing Administration found that female CRNAs averaged 38.4 hours per week while male CRNAs averaged 44.7 hours. Broader nursing data suggests about half of all nurses end up working more than 40 hours in a given week once overtime and extra shifts are factored in.
How On-Call Shifts Add Extra Days
On-call requirements are a major reason some CRNAs end up working more days than their base schedule suggests. Emergency surgeries, after-hours trauma cases, and overnight obstetric coverage all require anesthesia providers to be available outside normal operating room hours.
A national survey published by the American Association of Nurse Anesthetists found that about 51% of CRNAs worked 4 or fewer call shifts per month. That might mean one extra day per week, or it could mean a handful of overnight shifts spread across the month. CRNAs who took on 5 or more call shifts per month were nearly 4 times more likely to report significant fatigue, and those working 7 or more calls were almost 5 times more likely. Call shifts of 17 hours or longer on weekends were particularly tied to higher fatigue levels.
Not every CRNA position includes call. Outpatient surgery centers, pain clinics, and office-based practices often operate on predictable daytime hours with no after-hours obligations. If minimizing total days worked is a priority, these settings are worth targeting.
Locum Tenens and Contract Work
CRNAs who work as locum tenens providers (temporary assignments at facilities that need coverage) have the most control over how many days they work. You can choose assignments that run for a set number of weeks or months, then take extended time off between contracts. Some locum CRNAs work intensively for three months and then take a full month off. Others pick up individual shifts on a week-by-week basis.
The flexibility comes with tradeoffs: no employer-sponsored benefits in most cases, potential travel requirements, and less predictability in where you’ll be working. But for CRNAs who want to compress their work into fewer weeks per year or avoid mandatory overtime and holiday requirements, locum work is a well-established path.
What Affects Your Schedule Most
The single biggest factor is your practice setting. A CRNA in a Level I trauma center will almost certainly work more total days (including call) than one in a freestanding ambulatory surgery center. Rural hospitals and critical access facilities often have smaller anesthesia teams, which means more frequent call rotations for each provider.
Your employment model matters too. CRNAs employed directly by hospitals typically follow the facility’s shift structure with limited flexibility. Those working for anesthesia management groups may rotate between multiple sites, which can mean more varied schedules. Independent contractors and 1099 CRNAs negotiate their days and hours on a per-contract basis.
Seniority plays a role at many institutions. Newer CRNAs are more likely to be assigned less desirable shifts, including nights, weekends, and heavier call schedules. As you gain tenure, you generally get more input into which days and shift lengths you work.