Factory & Industrial Shift Calculator

See your DuPont, Panama, or 4-on-4-off shift schedule for the full year. Built for factory workers, plant operators, and manufacturing staff. Free, no login required.

Shift Patterns in Manufacturing

Manufacturing plants that operate around the clock rely on rotating shift systems to maintain continuous production. Whether you work in automotive, food processing, pharmaceuticals, chemicals, steel, or heavy engineering, your shift pattern determines your quality of life outside work just as much as your hours on the shop floor.

The most widely used continuous shift patterns in UK and European manufacturing are the DuPont (28-day cycle), the Panama / 2-2-3 (14-day cycle), 4-on-4-off (8-day cycle), and the Continental (21-day cycle). Each has different characteristics for hours worked, days off per month, and how weekends and bank holidays fall across the year.

DuPont schedule

The DuPont schedule is popular in chemical, petrochemical, paper, and steel plants. Its defining feature is a block of 7 consecutive days off in the middle of its 28-day cycle. Workers in remote or rural locations particularly value this extended break, as it makes longer trips home or abroad practical. The full sequence per team is: 4 night shifts → 3 off → 3 day shifts → 1 off → 3 night shifts → 3 off → 4 day shifts → 7 off. Four teams rotate through the same sequence on staggered start dates to maintain 24/7 cover.

Continental shift

The Continental pattern (2 days, 2 nights, 3 off) runs on a 21-day cycle and averages 40 hours per week — slightly lower than DuPont or 4-on-4-off. It is common in European automotive plants, food production facilities, and paper mills. Continental shifts tend to produce more frequent but shorter rest periods compared to DuPont's long break. Workers transitioning between day and night duties every two days can find the rapid changeover harder on sleep than the longer blocks in DuPont.

4-on-4-off

The simplest of the continuous schedules: 4 days working followed by 4 days off, repeating indefinitely on an 8-day cycle. It is popular in food manufacturing, warehousing, and distribution centres because it is easy to understand and administer. The 4-day rest block gives workers flexibility for family commitments, part-time work, or study. Because it operates on an 8-day cycle rather than 7, the days you work rotate through the week over time — so you will not always work the same weekdays.

Panama / 2-2-3

The Panama schedule (also called the 2-2-3 pattern) uses a 14-day cycle with two teams: one works days, one nights, then they swap. The pattern is 2 on, 2 off, 3 on, 2 on, 2 off, 3 off — giving every worker a 3-day weekend every other week. It averages 42 hours per week and is found in plastics moulding, packaging, and continuous-process sites that want maximum simplicity with two-team handovers.

Pattern comparison

Pattern Cycle Avg hrs/wk Teams Longest break
DuPont 28 days 42 4 7 days
Continental 21 days 40 4 3 days
4-on-4-off 8 days 42 2–3 4 days
Panama / 2-2-3 14 days 42 2–4 3 days

Night shift pay in manufacturing

Most UK manufacturing employers pay a night shift premium, typically between 25% and 33% above the basic hourly rate, though this varies by employer and collective bargaining agreement. Some plants pay a flat shift allowance rather than a percentage uplift. Bank holiday working usually attracts double time. Agency workers on site may receive lower or no premium — check your assignment schedule or the agency's terms before accepting night work.

Under the Working Time Regulations 1998, night workers in the UK must not work more than an average of 8 hours per 24-hour period over a 17-week reference period. Employers are also required to offer free health assessments before a worker starts night shifts and at regular intervals thereafter.

Bank holidays in manufacturing

Continuous process plants often run 365 days a year, which means bank holidays are working days for many teams. Whether a bank holiday falls on a working day or a rest day depends entirely on where you are in your shift cycle. Once you generate your 12-month calendar above, all UK bank holidays are automatically highlighted so you can see at a glance which ones you are working, which you have off, and how that affects your year's earnings.

Frequently Asked Questions

What is the most common shift pattern in manufacturing?

The most common patterns in continuous manufacturing operations are DuPont (28-day cycle), Panama/2-2-3 (14-day cycle), 4-on-4-off (8-day cycle), and Continental (21-day cycle). DuPont is especially prevalent in chemical, petrochemical, and heavy industry plants. The 4-on-4-off is common in food manufacturing and warehousing.

How does the DuPont schedule work for factory workers?

The DuPont schedule is a 28-day rotating pattern using 4 teams. Each team follows: 4 night shifts, 3 days off, 3 day shifts, 1 day off, 3 night shifts, 3 days off, 4 day shifts, then 7 days off. The 7 consecutive days off is DuPont's signature feature, valued by workers with long commutes or who want extended time for family and travel.

Do factory workers get paid extra for night shifts?

Most UK manufacturing employers pay a night shift premium of 25–33% above the basic hourly rate, though this varies by employer and union agreement. Some plants pay a flat allowance instead. Bank holiday working usually attracts double time. Check your contract or collective bargaining agreement for exact rates.

What is a continental shift in manufacturing?

The continental shift pattern (sometimes called 2-2-3 continental or European continental) is a 21-day cycle using 4 teams. Each team follows a repeating sub-pattern of 2 day shifts, 2 night shifts, and 3 days off. It averages 40 hours per week and is common in European automotive plants, food production facilities, and paper mills.

Can I check which bank holidays I work in my factory rota?

Yes. Generate your 12-month calendar above and all UK bank holidays are automatically highlighted. You can immediately see which bank holidays fall on your working days and which fall on days off — useful for planning ahead, arranging cover, or estimating bank holiday pay.

How many days off per year does a 4-on-4-off worker get?

A worker on 4-on-4-off works 182 or 183 days per year and has roughly 182 days off. Because the cycle is 8 days (not 7), the days you work rotate through the week over time, so you will work roughly the same number of weekdays across the year. The Statistics panel in the calculator shows your exact figures once you generate a calendar.

Is the Panama schedule the same as 2-2-3?

Yes — Panama and 2-2-3 are the same pattern described by different names. The full 14-day sequence is: 2 on, 2 off, 3 on, 2 on, 2 off, 3 off. Some sites call it the Pitman schedule; others use Panama or 2-2-3. The calculator lists it as "2-2-3 (Panama)" so you can find it regardless of the name your depot uses.

What are the Working Time Regulations limits for night workers in manufacturing?

Under the Working Time Regulations 1998, night workers in the UK must not average more than 8 hours of work per 24-hour period, calculated over a 17-week reference period. Employers must offer a free health assessment before a worker begins night work. Some sectors have opt-out agreements — check with your union representative or HR department if you are unsure whether limits apply to you.