Shift roster patterns in Australia: every major swing and rotation, with the real trade-offs

Every roster pattern looks reasonable on a whiteboard. The trouble starts six weeks in, when the night crew is running on fumes and the 3/1 swing you inherited is quietly failing the client’s fatigue standard. The pattern you choose sets four things at once: hours worked, headcount required, how often anyone sees their family, and how much fatigue risk you carry.

This guide covers every shift and swing pattern actually used in Australia: what each is, the numbers behind it, and how to compare them before committing a workforce to one.

What a roster pattern actually is

A roster pattern is a repeating cycle of work and rest, written as days on / days off. 8/6 means eight days of work, six off, repeat. Three terms do most of the work here (all defined in our glossary):

• Cycle: the days before the pattern repeats. 14 for 8/6, 21 for 2/1, 28 for DuPont.
• Swing: the on-site block in FIFO language. “What’s your swing?” means “what’s your pattern?”
• Panel (or crew): a group on the same pattern, offset from the other panels so the site stays covered while each takes its break.

The key mental shift: a pattern describes one worker’s rhythm; coverage comes from stacking offset panels.

One quiet detail: any cycle divisible by 7 locks to the same weekdays permanently. A guaranteed weekend off every break, or never one at all, decided by the start date.

Continuous vs non-continuous coverage

Before comparing patterns, answer one question: does the work stop?

Non-continuous operations work one block of the day: a civil crew on 12-hour day shifts, a workshop running 6am to 6pm. You only need enough panels to cover that block.

Continuous operations run 24/7: a process plant, an underground mine, a control room. Now you need day and night coverage at once, doubling the seats to fill and dragging night work, rotation direction and circadian load into the decision.

This distinction eliminates half the patterns at a stroke: Panama and DuPont exist to solve continuous coverage, and a day-only site running them would be hiring people for shifts that don’t exist.

The patterns, one by one

All figures below assume 12-hour shifts, which is what most of these patterns run in practice.

2/1 and 3/1 swings (14/7 and 21/7)

The 2/1 (two weeks on, one off) is the workhorse of Australian FIFO. A 21-day cycle, 56 average hours a week, roughly 120 days at home a year, and every break is a full week, long enough to feel like a life. It’s flight-efficient (one round trip per three weeks) and covers a seat with fewer crews than anything gentler.

The 3/1 (three weeks on, one off) pushes to 63 average hours and about 90 days home. It survives on remote exploration and short overseas campaigns, but it’s hard to hire for and sits badly against modern fatigue standards: 21 consecutive 12-hour shifts is the kind of number that makes an auditor reach for a highlighter.

Swings also carry flights, camp rooms and changeover days. That layer is covered in our guide to FIFO rostering software.

8/6

Eight on, six off. A 14-day cycle at 48 average hours, around 156 days home a year. The 8/6 became the compromise pattern of the last decade: meaningfully more home time than 2/1, meaningfully cheaper to staff than even time. The catch is flights: an 8/6 worker flies 26 times a year to a 2/1 worker’s 17, and every travel day nibbles the break.

Even time: 7/7 and 14/14

Even time means exactly what it says: as many days off as on. Both 7/7 and 14/14 average 42 hours a week and put about 182 days a year at home, which is why even time is the retention pattern: half your roster, half your life.

The two versions trade travel against stretch length. 7/7 means a flight every week, which is fine for DIDO or short hops and brutal for a Perth-to-Pilbara commute where two of the seven days off go to transit and recovery. 14/14 halves the trips but asks for a full fortnight away, which is where partners of FIFO workers develop strong opinions.

Panama (2-2-3)

The Panama runs a 14-day cycle: 2 on, 2 off, 3 on, 2 off, 2 on, 3 off. Every shift is 12 hours, the average is 42 a week, and you work the same days every fortnight, with a three-day weekend every second week, which is the pattern’s whole sales pitch.

Panama is a residential pattern, not a FIFO one; nobody flies to site for a two-day stint. You’ll find it in 24/7 control rooms, utilities and processing plants, covered by four crews (two on days, two on nights). Its strength: nobody ever works more than three shifts in a row. Its weakness: nobody ever gets a proper block off without dipping into annual leave.

DuPont

The DuPont is a 28-day, four-crew rotation mixing day and night blocks: typically four nights, three off, three days, one off, three nights, three off, four days, then the famous seven days off, averaging 42 hours a week across the cycle.

That full week off every month is why people love DuPont. The reason fatigue specialists squint at it is the price: one week in the cycle contains six shifts (a 72-hour week), and the rotation flips between days and nights with as little as 24 hours’ turnaround. It trades peak fatigue for a guaranteed recovery block; whether that works depends on the workforce and the site’s risk profile.

4-panel rotations

“4-panel” describes any continuous roster covered by four offset crews, but in Australian mining it usually means the even-time rotation: 7 days on, 7 off, 7 nights, 7 off, on a 28-day cycle. Two panels are always on site (one on days, one on nights) while two are home. It averages 42 hours, delivers even-time lifestyle, and bakes nights into everyone’s rotation equally, which kills the perpetual-night-crew problem before it starts. Variants run 8/6 timing for a 48-hour average where the operation wants more hours from the same four panels.

The patterns side by side

* Before travel days. † All these cycles divide by 7, so weekdays lock and weekend counts hinge on the start day; 8/6’s six-day break lands a full weekend every cycle or never.

Fixed nights, rotating nights, and which way to rotate

Continuous coverage forces the nights question, and there are only two honest answers.

Fixed crews keep the same people on nights permanently. Some workers genuinely prefer nights for the penalties and the quiet. The cost is a permanent B-team: fixed night crews see less supervision, training and daylight, and their turnover runs hotter.

Rotating crews share the circadian load: everyone does their week of nights and gets it over with. Direction matters. Rotating forward (days towards nights) is easier on the body than backwards, and quick returns (finishing a night block and starting days 24 hours later) are the single most fatiguing transition a roster can contain. DuPont has them by design; plenty of home-grown rosters have them by accident.

Either way, changeover is where a pattern leaks value. A roster with no structured handover window assumes nothing important ever happens at 5:55am.

How to compare two patterns: five numbers

Strip the folklore out of a roster debate by putting five numbers side by side.

1. Average weekly hours. Total rostered hours in the cycle ÷ weeks in the cycle. Drives pay, fatigue baseline and headcount at once. 2/1 at 12s is 56; even time is 42; the gap between those numbers is a third of a salary and a third of a workforce.
2. Days at home per year, counted after travel. A 7-day break with a travel day each end is a 5-day break. Short cycles multiply travel; this is where 8/6 and 7/7 give back some of what they promise.
3. Full weekends off per year. The number families actually feel. Check whether the cycle locks to weekdays and where the start day lands.
4. Fatigue exposure. Longest run of consecutive shifts, longest run of nights, and the worst rolling 7-day hour total anywhere in the cycle, not the average, which hides exactly what fatigue rules are written to catch.
5. Headcount required, covered next.

The free swing comparison tool runs the first three for any two patterns side by side, and the swing calendar generator maps a pattern onto real dates so you can see which weekends land where.

How the pattern sets your headcount

The arithmetic is short and unforgiving. Take the hours a seat must be covered per week, divide by the pattern’s average weekly hours, and you have crews per seat.

• 24/7 coverage is 168 hours a week. On even time (42 hrs), that’s exactly 4 crews; on 2/1 (56 hrs), 3. No clever pattern covers 24/7 with two crews; the arithmetic doesn’t negotiate.
• Day-only 12-hour coverage is 84 hours a week. 2/1 covers it with 1.5 crews per seat, 8/6 needs 1.75, even time needs 2.

Then add relief. Annual leave, sick leave, training and turnover push the real staffing factor 10–15% above the raw number: a 24/7 even-time operation genuinely needs about 4.5 heads per seat, not 4. Skipping the relief loading is how sites end up “covering” leave with overtime and quietly demolishing the fatigue case the roster was built on. The crew planner does this arithmetic for your actual seat count, relief included.

Pattern changes are therefore commercial decisions, not scheduling ones: moving a 60-seat operation from 2/1 to even time is a hiring project for roughly 20 extra people. Price it before the town hall, not after.

What fatigue limits mean for 12-hour patterns

Under the model WHS laws, fatigue is a hazard employers must manage like any other. Safe Work Australia’s fatigue guidance is explicit that shift structure, night work and commute time all form part of the risk, and Comcare treats it as a psychosocial hazard as well as a physical one. Most mining clients and major contractors layer their own numeric standards on top, and those are what actually constrain a 12-hour pattern:

• Shift length capped around 12–14 hours including pre-starts and handover; a “12-hour” shift with a 30-minute pre-start and a bus ride is already flirting with the cap
• Minimum rest of 10 hours between shifts, ruling out most quick returns
• Consecutive shifts commonly capped at 14, which is precisely why the 2/1 endures and the 3/1 is dying
• Consecutive nights capped lower again, often around 7
• Rolling hour limits across 7, 14 and 28 days: the check that catches the DuPont-style 72-hour week an annual average conceals

Read those against the table above and the landscape explains itself: 2/1 sits at the ceiling of most standards, 3/1 sits above it, and the 42-hour patterns clear every limit with room to spare. The practical question is where the limits are enforced. In a policy PDF, they get checked after the roster is built, usually by an incident investigation. Rostering software that holds the pattern and the fatigue rules in one system checks every allocation at booking time: the 15th consecutive shift simply refuses to be rostered, which is a much cheaper conversation than the alternative.

Common mistakes when choosing a pattern

Copying another site’s roster. The pattern that works down the road was shaped by their commute distance, camp capacity, workforce age profile and client fatigue standard. Import it without the context and you import a solution to somebody else’s problem. Start from your own coverage requirement; the roster templates guide covers building the chosen pattern as a reusable object.

Ignoring travel days. On paper, 8/6 gives 156 days home and 7/7 gives 182. Add a long commute (a flight each way, 26 times a year) and short-cycle patterns surrender 30–50 of those days to airports and recovery. For long commutes, fewer longer breaks beat frequent short ones, which is exactly the 14/14 argument.

Averaging hours over the wrong window. Under the Fair Work framework, ordinary hours are 38 a week plus reasonable additional hours, and awards and agreements allow averaging over a roster cycle, which is what makes a 56-hour swing lawful. But averaging provisions are an industrial instrument, not a fatigue defence. A pattern can average a tidy 42 while containing a 7-day stretch that breaches every rolling limit the client publishes. Always test the worst window in the cycle, never the mean.

Frequently asked questions

What is a 2/1 roster?

A 2/1 roster is two weeks on site followed by one week off, on a 21-day cycle, also written 14/7. At 12-hour shifts it averages 56 hours a week and gives roughly 120 days at home per year. It’s Australia’s most common FIFO production roster: flight-efficient, with a break long enough to be worth flying home for.

What does “even time” mean in a roster?

Even time means the days off equal the days on: 7/7, 14/14 or two weeks on, two weeks off. Workers spend half the year at home and average 42 hours a week on 12-hour shifts. It costs more to staff than compressed swings, so it’s used where retention pressure justifies the extra headcount.

How many crews do you need for a 24/7 roster?

Divide 168 (the hours in a week) by the pattern’s average weekly hours. Even-time and Panama-style patterns at 42 hours need exactly 4 crews; a 2/1 swing at 56 hours needs 3. Real operations add 10–15% for leave, training and turnover relief, so a 24/7 even-time site plans around 4.5 people per seat.

What is a Panama roster?

The Panama (also called 2-2-3) is a 14-day cycle of 2 on, 2 off, 3 on, 2 off, 2 on, 3 off, worked in 12-hour shifts by four crews. It averages 42 hours a week, never rosters more than three consecutive shifts, and delivers a three-day weekend every second week. It suits residential 24/7 operations such as processing plants and control rooms rather than FIFO.

Are 12-hour shifts legal in Australia?

Yes, provided the arrangement meets award or agreement terms and the employer manages fatigue as required under WHS law. Ordinary hours of 38 a week can be averaged over a roster cycle, which is how compressed swings like 2/1 operate lawfully. Most sites also apply numeric fatigue standards (maximum shift length, minimum breaks, caps on consecutive shifts and rolling hours) that constrain how 12-hour patterns are built.