Does Night Work Cap My Working Day at 10 Hours?

Yes — if any of your working time falls in the night period, your working time is capped at 10 hours in that 24-hour period. For goods vehicles the night period is between midnight and 4am (00:00 to 04:00), and it only takes some of your work landing in that window to trigger the limit. The cap can be lifted only by a collective or workforce agreement.

What the rule says

Under the Road Transport (Working Time) Regulations 2005, "night time" for goods vehicles is defined as the period between midnight and 4am; for passenger vehicles it's between 1am and 5am. GOV.UK's working time rules for drivers state that "night work is limited to 10 hours per night unless there is a workforce agreement to work longer." So the rule isn't about how much of your shift is at night — it's a trigger: touch the night window with any working time, and your total working time in that period is limited to 10 hours.

"Any" night work is the catch

This is what surprises drivers. You don't have to work mostly at night to be caught. Start at 03:30 and you've worked half an hour in the night window — that's enough to make the whole period night work and bring the 10-hour cap into play. An early tramping start, a night trunk, or finishing a long day just after midnight can all trip it. Because it's the working-time total that's capped (driving plus other work), a night start plus a full day of loading and driving can hit 10 hours faster than you'd think.

The only way to work longer

The single exception is a collective or workforce agreement that allows more than 10 hours of night work. This is an arrangement between the operator and its workforce, not something an individual driver can opt into or out of. Without such an agreement, the 10-hour night limit is firm, and it sits on top of your ordinary 48-hour average and 60-hour week and all your driving limits — it doesn't replace them.

What to do

If your shift touches 00:00–04:00, plan to keep working time within 10 hours unless your operator has a workforce agreement in place — and check whether it does. Watch it especially on early starts and late finishes, where a small overlap with the night window brings the cap in. The free drivers' hours calculator flags when night work applies and tracks your working time against the limit, and the night work and working time limits cover night work in full. For operators managing night-work agreements and evidence across a fleet, that's part of what HaulGuard's compliance system is built to keep straight.