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Continuous Shift Preset

4 On 4 Off Shift Calendar Generator

Create a repeating 4 work days, 4 off days calendar. Choose your start date, preview your upcoming 12-month rotation, and export directly to Google Calendar, Outlook, Apple Calendar, or CSV spreadsheets.

Cycle Length

8 Days

4 ON / 4 OFF repeating

Standard Shift

10 or 12h

Day or Night shifts

Annual Days Off

182.5 Days

50% of the entire year

Average Workweek

42 Hours

Over 8-week macro cycle

1

Configure schedule

Choose the first work day, cycle length, and export range.

Upcoming events

The first 20 generated rows are shown here before export.

DateLabelType
2026-05-10Work shiftWork
2026-05-11Work shiftWork
2026-05-12Work shiftWork
2026-05-13Work shiftWork
2026-05-18Work shiftWork
2026-05-19Work shiftWork
2026-05-20Work shiftWork
2026-05-21Work shiftWork
2026-05-26Work shiftWork
2026-05-27Work shiftWork
2026-05-28Work shiftWork
2026-05-29Work shiftWork
2026-06-03Work shiftWork
2026-06-04Work shiftWork
2026-06-05Work shiftWork
2026-06-06Work shiftWork
2026-06-11Work shiftWork
2026-06-12Work shiftWork
2026-06-13Work shiftWork
2026-06-14Work shiftWork

1. Understanding the 4 On 4 Off Rotation Mechanics

The 4 on 4 off schedule is an 8-day repeating cycle commonly implemented in 24/7 continuous operations where round-the-clock staffing is required. Employees work four consecutive shifts (typically 10 to 12 hours each) followed immediately by four consecutive rest days.

Because the schedule is governed by an 8-day rhythm rather than the standard 7-day calendar week, your work blocks drift forward by one weekday each cycle. For instance, if your 4-day work block begins on a Monday, your next work block will begin on the following Tuesday, providing equitable weekend exposure across all teams.

Single Crew 8-Day Sequence:

Day 1 Work (12h)
Day 2 Work (12h)
Day 3 Work (12h)
Day 4 Work (12h)
Day 5 Off Duty
Day 6 Off Duty
Day 7 Off Duty
Day 8 Off Duty

2. Common Industries Using 4 On 4 Off

Emergency Services & EMS

Paramedics, dispatchers, and corrections officers rely on 4 on 4 off to maintain consistent squad cohesion and guarantee regular 4-day recovery windows between demanding rotations.

Continuous Manufacturing

Chemical processing, paper mills, semiconductor fabrication, and automotive assembly lines employ four rotating crews to operate 24 hours a day, 365 days a year without shutting down equipment.

IT & Mission-Critical Operations

Data center technicians, cybersecurity incident responders, and network operations center (NOC) teams use 12-hour 4-on-4-off patterns for seamless day/night coverage.

3. FLSA Overtime & Paycheck Calculations

Managing payroll under a 4 on 4 off pattern requires careful alignment with the Fair Labor Standards Act (FLSA). Because the statutory workweek is strictly defined as seven consecutive 24-hour periods (168 total hours), an employee's hours will not distribute evenly every week:

  • The 48-Hour Week: When four 12-hour shifts fall within a single 7-day payroll cycle, the employee records 48 hours, earning 8 hours of statutory overtime pay.
  • The 36-Hour or 24-Hour Week: During the alternate cycle, the employee may work only two or three shifts (24 to 36 hours), balancing total compensation across biweekly pay periods.
  • Workweek Definition Strategy: Employers can choose the official day and hour that their 7-day workweek begins (e.g., Sunday midnight vs Wednesday noon) to legally stabilize overtime volatility.

4. Fatigue Management on 12-Hour Consecutive Shifts

Evidence-Based Recovery Strategies

Working four consecutive 12-hour shifts creates significant cumulative sleep debt by Day 4. The 4 subsequent rest days provide an optimal recovery window when managed correctly:

Day 1 Off (The Recovery Anchor): Sleep 4–5 hours immediately after the final shift, wake in the early afternoon, and sleep normally that night to quickly reset your circadian rhythm.
Pre-Shift Meal Prep: Prepare all meals for the 4-day block during your days off. A 12-hour workday leaves only 2–3 hours of free personal time outside of sleep and commuting.

Importing Your 4 On 4 Off Calendar

Download the generated schedule as an ICS feed for mobile and desktop calendar apps or as CSV for payroll spreadsheets.

ICS Generator

Generate custom calendar feeds with timezone alerts and event alarms.

2-2-3 Shift Pattern

Explore the 14-day Pitman rotation that offers alternating 3-day weekends off.

Shift Guide

Read our masterclass on continuous shift scheduling and 4-crew staffing.

Frequently asked questions

How many hours a week do you work on a 4 on 4 off schedule?
Because the 4 on 4 off schedule is based on an 8-day cycle rather than a standard 7-day calendar week, weekly hours fluctuate depending on where the shifts fall. With standard 12-hour shifts, you work 48 hours within each 8-day period. Averaged over an 8-week cycle (56 days), this equals exactly 42 hours per 7-day workweek (336 total hours divided by 8 weeks).
How many days off do you get a year on a 4 on 4 off schedule?
On a 4 on 4 off rotation, you work exactly 50% of the days in a year. In a standard 365-day year, you work approximately 182 to 183 days and receive 182 to 183 scheduled days off. Compared to a standard Monday-Friday schedule (which has ~260 work days and ~104 weekend days off), 4 on 4 off provides approximately 78 more days off per year.
How does overtime work under the FLSA for a 4 on 4 off schedule?
Under the US Fair Labor Standards Act (FLSA), overtime for non-exempt private-sector employees must be calculated based on a fixed 7-day, 168-hour statutory workweek. Under 12-hour shifts, some calendar workweeks will contain 48 work hours (triggering 8 hours of statutory overtime pay at time-and-a-half), while alternating weeks will contain 36 or 24 work hours. Public safety agencies (fire and police) frequently utilize FLSA Section 7(k) exemptions, which permit work periods between 7 and 28 days before statutory overtime applies.
How often do you get weekends off on 4 on 4 off?
Because the 8-day cycle is one day longer than a 7-day week, your work and rest blocks shift forward by exactly one day of the week each rotation. This means you will rotate through full weekend work blocks, partial weekend blocks, and full 4-day weekend off blocks (including Friday through Monday) once every 8 weeks.
Can I import this schedule into Google Calendar or Outlook?
Yes. Click the 'Download ICS' button to save your personalized feed, then navigate to Google Calendar (Settings > Import & export) or Outlook (Add calendar > Upload from file) to import your full 12-month rotation with one click.
Can I include my scheduled off-days in the exported calendar?
Yes. Toggle the 'Include off-days' option before exporting. The generator will create dedicated all-day calendar events for your rest days (e.g., 'Off Duty'), allowing family and coworkers to easily see your availability.