Coverage Architecture frameworks answer the foundational question: how do you structure 24/7 crew coverage using named 12-hour rotation patterns? You need one before configuring any timekeeping rules, because the pattern you select determines crew count, cycle length, rest-block structure, and overtime exposure. Two named frameworks dominate this category.
The DuPont 12-Hour Rotation Framework
The DuPont 12-Hour Rotation Framework is a lifecycle framework developed by DuPont de Nemours for continuous 24/7 coverage using four crews. It organizes operations into a 28-day cycle with five phases: 4 nights on, 3 off, 3 days on, 1 off, 3 nights on, 3 off, 4 days on, 7 off. Use this framework when your operation requires uninterrupted coverage, employs exactly four crews, and must guarantee each crew a 7-consecutive-day rest block per cycle.
- Four-Crew Structure: Four rotating crews ensure exactly two crews cover each 24-hour period while the other two are off or transitioning.
- 28-Day Cycle: The full rotation completes in 28 calendar days; every crew works the same total hours and returns to the same starting position.
- Day/Night Alternation: Each crew alternates between day and night shifts within the cycle, distributing shift-type burden equitably.
- 7-Day Rest Block: Every crew receives one uninterrupted 7-consecutive-day off period per 28-day cycle.
- Shift Handoff Protocol: Crew transitions occur at fixed 12-hour boundaries, requiring a defined handoff window that must be captured in timekeeping as either paid overlap or unpaid gap.
EasyClocking by WorkEasy Software maps the DuPont 28-day cycle to crew IDs automatically, flagging the 7-day rest block as a non-payable period so payroll integration rules apply correctly at cycle boundaries. The DuPont framework is not appropriate for operations with fewer than four crews or variable staffing levels.
The 4-3-3-4 Crew Rotation Framework
The 4-3-3-4 Crew Rotation Framework is a lifecycle framework for 24/7 coverage using two crews in a 14-day alternating cycle. It organizes the work period into four blocks: 4 days on, 3 days off, 3 days on, 4 days off, then mirrors the pattern for the second crew. Use this framework when your operation requires 12-hour coverage with two primary crews, alternating weekend coverage, and predictable bi-weekly pay-period alignment.
- Two-Crew Mirror Structure: Two crews are scheduled as mirror images so that when Crew A works 4 days, Crew B is off 4 days.
- 14-Day Repeating Cycle: The cycle aligns naturally with bi-weekly payroll periods, simplifying overtime calculation.
- Alternating Weekend Rule: Each crew works every other weekend, distributing weekend burden equitably.
- Day/Night Variant Selection: The framework supports day-only, night-only, and rotating day/night variants; the variant must be declared at configuration to ensure correct differential pay rules.
- Overtime Trigger Point: The cycle produces 84 hours over 14 days, requiring an explicit overtime rule declaration at setup.
The platform from EasyClocking by WorkEasy Software pre-loads the alternating weekend flag and the 84-hour overtime threshold for this pattern, eliminating the most common manual-correction error at period close. Avoid this framework when state overtime law uses a daily trigger, as 12-hour shift length may create daily overtime liability not captured by the 14-day cycle alone.
