Three separate problems, not one
Policing throws three different kinds of unpredictability at a custody plan, and lumping them together is why most plans fail. The rotation is predictable and can be designed around. Court is semi-predictable and needs notice rules. Overtime and callouts are unpredictable and need a standing backup. Solve them separately and each becomes manageable.
| Problem | How predictable | What it needs |
|---|---|---|
| The rotation | Fully — published weeks ahead | Custody blocks designed onto the off-days |
| Court appearances | Partly — usually days or weeks of notice | An agreed notice period and a named backup |
| Overtime and callouts | Not at all | A standing rule that does not require negotiation |
Start by checking whether your rotation drifts
This decides what kind of plan is even possible. A 4-on/3-off rotation runs on a seven-day cycle, so your days off land on the same weekdays every week and you can name them. A 5-2-5-3 rotation runs on 15 days, which does not divide by seven — your off-days walk through the week and any fixed-weekday arrangement will come apart within a couple of months.
| Rotation | Cycle | Days off | Fixed weekdays possible? |
|---|---|---|---|
| 4-on / 3-off | 7 days | 3 | Yes — same days every week |
| Pitman 2-2-3 | 14 days | 7 | Yes — same days every fortnight |
| 5-2-5-3 | 15 days | 5 | No — drifts a day each cycle |
| Dupont | 8 days | 4 | No — drifts a day each cycle |
If you are on a drifting rotation, the plan has to be written in rotation terms — "the second and third days of each off-block" — and then published as actual dates for the next three months. The rule is for you two; the dates are for everyone else, including the child, the school and whoever does the backup pickup.
The court and overtime rules to agree once
These are the ones people improvise, and improvising under time pressure is what turns a work problem into a co-parenting problem.
- Notice period for a known change. A specific number of hours for anything you know about in advance, including court. Without a number, every notice feels either too short or like an imposition.
- One named backup. A single person both parents have agreed can collect, not a list of possibilities assembled during a callout.
- What happens to lost time. Decide now whether time lost to a callout is absorbed or made up, and if made up, within what window.
- A cut-off for the swap. A point past which the block simply transfers rather than being juggled, so nobody is negotiating at 11pm.
Bottom line: Plan for the rotation, court and overtime as three separate things, because they behave differently. Check whether your cycle divides by seven before naming any weekdays, publish real dates rather than the pattern, and agree the notice period and named backup before the first callout tests them.