ACGME rules for EM residency scheduling

Key rules at a glance

The table below summarizes the major scheduling rules that apply when EM residents are on emergency medicine rotations.

None of these limits can be averaged over longer periods. Every week and every shift transition has to meet them on its own.

The rules in detail

Shift length cap

On ED patient care, residents can't work more than 12 continuous hours. The cap applies to clinical time in the emergency department; off-service rotations follow the host specialty's rules.

Two separate weekly hour caps

During EM rotations, two weekly limits run in parallel (ACGME EM Program Requirements, Section VI):

• 60 hours of scheduled direct patient care in the ED
• 72 hours of all rotation-related activity, including didactics, simulation labs, and conferences

These caps are absolute per-week limits. Consider a resident with 52 ED hours and 14 hours of conferences in one week: 66 total hours, within both limits. If they pick up an extra 9-hour ED shift, their ED hours reach 61 (over the 60-hour cap) and their total reaches 75 (over the 72-hour cap). Each cap has to be met on its own, and in this case neither is.

Note: EM Scheduling enforces both caps directly. Each is checked for every calendar week (Monday–Sunday), and a schedule can't be published while either is exceeded.

Rest between shifts

Most specialties use a fixed 8-hour minimum between work periods. EM requires equivalent rest instead: time off must be at least as long as the shift just worked. In practice:

• After an 8-hour shift → minimum 8 hours off
• After an 11-hour shift → minimum 11 hours off
• After a 12-hour shift → minimum 12 hours off

Conferences complicate this: educational activities like grand rounds and didactics count toward duty hours but do not count as rest. If a resident finishes an 11-hour night shift at 7 AM and has mandatory conference from 7:30 to 11:30 AM, the rest clock doesn't start until 11:30 AM, so the next shift can't begin before 10:30 PM that evening.

24 hours off every 7 days

"Emergency medicine residents must have a minimum of one day (24-hour period) free per each seven-day period. This cannot be averaged over a four-week period." Every seven-day period has to contain a full 24 hours free of clinical and educational duties.

Night shift limit

No more than six night shifts in a row. That's easy to respect when the schedule is first built, and easy to break when coverage changes mid-block.

Clarification: "Night" isn't explicitly defined by hour in the EM-specific requirements, but is generally accepted as any shift ending after 2:00 AM or starting after 10:00 PM.

Moonlighting

PGY-1 residents may not moonlight. For upper-level residents, moonlighting hours affect the weekly caps differently:

• Moonlighting within the ED counts toward the 60-hour clinical and 72-hour total weekly caps
• Moonlighting at an outside facility still counts under ACGME rules, but EM Scheduling can't see it, so programs have to track those hours separately

Where programs get tripped up

Switching between shift types

Most problems show up when a resident moves from one kind of shift to another:

• Night → morning: An 11-hour night shift ends at 8 AM, and the resident picks up a 7 AM shift the next morning to cover a sick colleague. The 23 hours in between are plenty of rest after an 11-hour shift, but they fall an hour short of a full 24-hour day off. If that was the resident's only break that week, the week now breaks the day-off rule, and that's easy to miss by hand.
• Evening → early day: A resident works 3 PM to 12 AM (9 hours). A 7 AM start the next morning leaves only 7 hours of rest, short of the 9 hours that shift requires.
• Miscounting after conference: A scheduler counts rest from the end of the clinical shift instead of the end of the conference that followed it.
• Gaps between rotations: A resident finishing EM nights starts a new off-service block the next morning without enough rest built in.

Night shift overruns

A resident scheduled for five nights in a row picks up a sixth to help with staffing, which is still compliant. One more request makes seven, and that breaks the limit. Without automated tracking, these small additions slip through.

A week without a day off

Because the day-off rule can't be averaged, every seven-day window has to be checked on its own. A schedule that looks balanced across the block can still contain a week without a full 24-hour break.

Accreditation and consequences

The ACGME monitors duty-hour compliance in several ways. Each year, residents complete an anonymous survey about their actual working conditions. Programs also submit data through the Accreditation Data System, and unannounced site visits are possible.

When problems surface, the consequences escalate:

• Letters of inquiry requiring documented corrective plans
• Shortened accreditation cycles with more frequent reviews
• Public probation, which can damage applicant recruitment for multiple cycles

Even isolated resident complaints can trigger a formal investigation. Building compliance into the schedule from the start costs far less than fixing problems after the fact.

Why EM schedules are hard to build

What makes EM scheduling hard is that all of these rules apply at once, and they interact in ways that aren't obvious.

Interlocking rules

Fixing one problem can create another. Giving a resident a day off in a particular week might force a shift change that breaks someone else's rest requirement. Cutting a resident's hours to stay under 60 can leave a coverage gap that, once filled, pushes the replacement over 72.

The sheer number of checks

A mid-sized program with 36 residents in a four-week block needs thousands of individual rule checks:

• Rest at every shift change, for every resident
• Two separate hour totals per resident per week
• A day-off check for every seven-day window
• Night-shift streaks tracked across block boundaries

Published doesn't mean done

Even a fully compliant published schedule can break the moment a trade, a sick call, or a PTO approval goes through. Every change has to be re-checked against every rule, for the resident involved and for anyone else it affects.