Management was certain compensation was driving the departures. The diagnostic told a different story — and the DuPont schedule’s built-in seven-day break changed everything.
MiningA hard-rock underground mining operation had been losing skilled workers to local oil and gas competitors at a rate well above industry norms. The leadership team had concluded that compensation was the issue and was preparing a wage adjustment estimated at $4.8 million annually. The diagnostic phase examined exit interview data, stay interview themes, and tenure-curve patterns — and identified that the schedule was the largest single driver of voluntary departures, not compensation. The primary appeal of oil and gas employment was the extended time-off block built into the 14-day-on / 14-day-off rotation. Implementing the DuPont schedule — a 12-hour, four-crew rotating schedule on a 28-day cycle with a built-in 7-consecutive-day break — directly addressed that gap and cut voluntary turnover by 56% in the first year, at a fraction of the cost of the planned wage adjustment.
An underground hard-rock mining operation running a four-crew 24/7 continuous schedule. Approximately 480 workers across underground production, surface operations, and maintenance. The operation was located in a region with active oil and gas employment competition, including operators offering 14-day-on / 14-day-off rotations that had become the regional standard for skilled tradespeople. The mine was on a traditional rotating 8-hour three-shift structure, with workers cycling through Day, Afternoon, and Night across a schedule that produced no extended consecutive-days-off blocks.
Voluntary turnover had been running at approximately 18% annually for three years — well above the historic mine baseline of 6–8%. Skilled trades, including mechanical and electrical maintenance positions, were the most affected categories, with departures concentrated in the 2–5 year tenure band. Management had drafted a wage adjustment package targeting market parity with competing oil and gas operators, with an annual cost in the range of $4.8 million.
The proposed wage package was a significant ongoing cost, and there was reasonable concern within the leadership team that even at full market parity, the mine would still be at a structural disadvantage on schedule terms compared to the 14/14 rotation offered by oil and gas competitors. If the wage adjustment did not actually solve the problem, the operation would be carrying both the new payroll cost and the same retention challenge. Leadership wanted to test whether compensation was actually the primary driver before committing to the spend.
Phase 1 · Business Assessment
We pulled three years of exit interview data, supplemented by structured stay interviews with current workforce members across tenure bands. We mapped the tenure curve to identify where in the employment lifecycle workers were leaving. We performed a direct feature-by-feature comparison of the mine’s existing schedule against the competing 14/14 oil and gas rotation. We analyzed compensation data to confirm or refute the assumption that pay was the primary driver.
Compensation was a factor — the mine was paying roughly 8–12% below market for the most-affected trades — but exit interview data indicated schedule was named as the primary or co-primary driver in 64% of voluntary departures. Workers cited two closely related features above all others: the absence of any extended consecutive-days-off block (cited by 61% of departures) and the unpredictable rotation through three shift types that made personal planning difficult (cited by 48%). The structure of the competing 14/14 rotation — two uninterrupted weeks away from the site every month — was explicitly named as the primary attraction of oil and gas employment in 43% of exit interviews.
When workers say they left for higher pay elsewhere, they often mean that higher pay was the deciding factor among options that had already become viable for other reasons. The schedule that pushed them to start looking is usually the more important variable.
Phase 2 · Workforce Assessment
We conducted structured stay interviews with current workforce members at every tenure band, focusing on the schedule features identified in the exit data. Workers in the high-risk 2–5 year band were consistent: the absence of extended time-off blocks was the feature that made oil and gas employment feel worth exploring. Pay was a secondary consideration that made the alternative viable once the schedule had already made it attractive. Workers were also asked directly about the DuPont schedule concept — a 12-hour rotating format with a 7-consecutive-day break built into the 28-day cycle. Response was strongly positive, particularly among workers with families or significant personal commitments that benefited from predictable extended-time-off windows.
Phase 3 · Solution Design
The DuPont schedule is a 12-hour, four-crew rotating schedule on a 28-day cycle. Its defining structural feature is a 7-consecutive-day break built into every cycle — one full week off every four weeks, guaranteed and predictable. Workers who use a single day of vacation can extend that break to 14 days, matching the extended-time-off window that was the primary stated attraction of the competing oil and gas 14/14 rotation. The schedule runs days and nights in rotation, so no crew is permanently assigned to night work, and the rotation is predictable enough that workers can plan personal commitments weeks and months in advance.
The math works on four crews: at any point in the 28-day cycle, two crews are working (one days, one nights) and two crews are in various stages of their off period. Total hours worked per employee over the 28-day cycle are in line with standard full-time employment, and the rotation distributes weekends equitably across all crews over time. No crew works more weekends than any other over the full cycle.
The structure below illustrates the Day/Night/Off rotation pattern for a single crew across a full 28-day cycle. All four crews follow the same sequence, offset by seven days from each other, which ensures continuous 24/7 coverage at all times.
One crew’s 28-day DuPont rotation. The 7-day break (orange) is built into every cycle. With one vacation day, workers extend it to 14 consecutive days off — matching the core appeal of the oil and gas 14/14 rotation.
Moving from an 8-hour three-shift structure to a 12-hour four-crew DuPont required careful crew-count analysis to ensure no gaps in production or maintenance coverage. The transition was operationally straightforward: the mine already operated four crews, which is the correct crew count for 12-hour DuPont coverage. The structural change was in shift length and rotation pattern, not crew count. A modest wage adjustment in the 3–5% range was included alongside the schedule change to address the genuine compensation gap — but at substantially lower cost than the original 8–12% parity package.
Phase 4 · Implementation Preparation and Rollout
The implementation manual addressed the full 28-day rotation sequence for all four crews, the start-time structure (6:00 AM / 6:00 PM), break week scheduling and vacation bridge mechanics for extending the 7-day break to 14 days, overtime rules for the new shift structure, and the crew assignment process. Management and union representatives reviewed the manual prior to workforce communication. Rollout took eleven weeks, including a three-week parallel period during which new rotation assignments were communicated and workers could review their upcoming schedules before the cutover date. A dedicated Q&A process addressed worker questions about the break week mechanics and how the vacation bridge worked in practice.
Measured against the client’s stated objective:
| Metric | Before | After |
|---|---|---|
| Voluntary turnover, annualized | 18% | 7.9% |
| Schedule-cited departures, share of total | 64% | 18% |
| Skilled trades departures, year one | Baseline | Down 59% |
| Annual cost of original wage parity package | +$4.8M projected | +$1.4M actual (3–5%) |
| Time-to-fill for skilled trades vacancies | ~91 days | ~36 days |
| Workers using vacation bridge to extend break to 14 days | N/A | 71% of workforce per cycle |
The 7-day break was the most consistently cited positive change in post-implementation workforce surveys. Workers described it as “the reason I stopped looking elsewhere” and as making the mine feel genuinely competitive with oil and gas employment for the first time. The vacation bridge mechanic — using one day of vacation to convert the 7-day break into 14 consecutive days off — was adopted rapidly and broadly: 71% of the workforce used it at least once in the first cycle year. Recruiting improved as the DuPont schedule became known in the regional labor market; the mine began attracting applicants who had previously chosen oil and gas employers specifically for the schedule terms. The retention improvement held through the second year of operation.
The Design Principle: The DuPont schedule’s 7-day break does not require workers to sacrifice total time off to get extended time off — the math works because the rotation distributes the same number of days off differently. Workers get the same proportion of days off as any other 12-hour schedule, but concentrated into a pattern that produces the consecutive-days-off block that directly competes with the appeal of 14/14 rotations.
The pattern in retention engagements is that workers articulate their reason for leaving in the language that is socially acceptable and easy to defend — usually compensation. The actual decision-making process is more complex, and the schedule is often the variable that pushed them to start looking in the first place. In this case, the schedule gap was specific and identifiable: workers were leaving for a fundamentally different time-off experience, not primarily for a higher wage.
The DuPont schedule is particularly well-suited to mining operations competing with oil and gas or other industries that offer extended-time-off rotations. It does not fully replicate the 14/14 structure — workers are on site more frequently — but the 7-day break, especially when extended to 14 days with a vacation bridge, closes enough of the perceived gap that compensation can address the remainder. The result is a package that competes effectively without restructuring the operation around a rotational FIFO model that mining logistics rarely support.
If your operation is losing workers to competitors with structurally different schedule offerings, and the planned response is a wage adjustment, the most useful first step is testing whether compensation is actually the largest variable driving the exits. The answer changes the cost and structure of the response significantly — and the data needed to answer the question is usually already in the exit interview file.
Shiftwork Solutions LLC has guided hundreds of engagements across mining, food manufacturing, distribution, pharmaceuticals, automotive, and other 24/7 and shift-based operations over more than three decades. Visit shift-work.com to start a conversation.
