Office cleaning hours: shift patterns explained
Why the sector clocks on at dawn and dusk, and how part-time shifts get stacked into a full week's pay.
Most office cleaning happens in two windows: roughly 5am to 8am before staff arrive, and6pm to 9pm after they leave. A typical contract shift lasts 2 to 3 hours, Monday to Friday, paid at £12.71 an hour or more. Cleaners who want full-time money stack a morning and an evening shift, take mobile multi-site roles, or add weekend deep-clean work on top.
Before the first desk fills: the early shift's territory.
Why does office cleaning happen at 5am and 9pm?
Office cleaning is scheduled around one fact: the building needs to be empty. Vacuuming between occupied desks is slow, awkward for everyone and against most clients' wishes, so contracts specify cleaning either before the working day or after it. That produces the two windows every cleaner in this niche knows, an early shift somewhere between 5am and 8am and an evening shift between 6pm and 9pm.
The exact times are set by the building, not the cleaning company. Alarm and access windows, when security unlocks, when the last team habitually leaves, and whether the client wants cleaners gone before the first meeting all shape the rota. Large buildings sometimes keep a daytime housekeeping presence for kitchens, washrooms and meeting rooms, and those day janitor roles are the main exception to the early-late pattern.
The standard shift patterns
| Pattern | Typical hours | Where you see it |
|---|---|---|
| Early shift | 5am to 8am, Mon-Fri | Offices wanting cleaners gone before staff arrive |
| Evening shift | 6pm to 9pm, Mon-Fri | The single most common office cleaning advert |
| Day janitorial | Within office hours | Large buildings: washroom, kitchen and meeting-room cover |
| Term-time | Approx 3.30pm to 6pm, term only | Schools and colleges on cleaning contracts |
| Weekend or periodic | Saturday or Sunday blocks | Deep cleans, carpets, floor treatment |
| Mobile multi-site | Varies, driving between sites | Several small buildings covered in one shift |
Term-time contracts deserve a note because they behave differently: hours follow the school calendar and pay is usually averaged across the year so wages still arrive in the holidays. They dominate theschool cleaning boards and are prized by parents for obvious reasons.
- Early shift window
- 5am to 8am
- Evening shift window
- 6pm to 9pm
- Typical shift length
- 2 to 3 hours
- Legal minimum, 21 and over
- £12.71/hour
- When contracts change hands
- TUPE protects existing hours
How do cleaners stack shifts into a full week?
A single office contract rarely pays a living on its own. Five evening shifts of three hours is 15 hours a week, about £190 at the legal floor of £12.711. The standard fix is stacking: a 5am to 8am clean in one building and a 6pm to 9pm clean in another turns the same day into six paid hours and the week into 30, around £380 before tax. Add a Saturday deep clean or holiday cover and the week approaches full-time money.
The pattern works because the two shifts sit at opposite ends of the day, leaving the middle free for childcare, study or a second job. Supervisors know it too: reliable cleaners get offered extra buildings first, and mobile multi-site roles exist precisely to hand one person a full shift across several small sites. What those hours add up to over a year, and how office rates compare with every other niche, is covered in ourcleaner salary guide.
What happens to your hours when the contract changes hands?
Office cleaning contracts move between companies all the time; buildings retender every few years as a matter of routine. When that happens, the Transfer of Undertakings (Protection of Employment) Regulations, TUPE, normally transfer the cleaning staff to the incoming contractor with their existing pay, hours and length of service intact2. In practice the uniform changes, the payslip logo changes, and your shift mostly does not.
A new contractor who wants to change hours or cut posts has to follow a fair process and consult staff; the transfer itself is not a legal reason to reduce anyone's hours. If a letter about a new cleaning provider appears on the noticeboard, read it, keep it, and check your first payslip under the new company against your last one under the old. GOV.UK sets out the rules in plain language, and it is worth ten minutes of anyone's time in this sector.
Keyholding and lone working
Adverts that say keyholder mean you open or lock the building and set the alarm. It is a trust role: you hold the code, you are first in or last out, and you are the person security calls when the alarm trips. Keyholder duties usually pay above the base rate and are the normal first step towards team leader, because the contractor has already decided you are dependable.
Early and late shifts also mean working alone, and that is a managed risk, not an ignored one. Employers must assess lone working and put sensible arrangements in place, such as check-in calls and a named contact3. Ask at interview how the alarm handover works and who you phone at 5am when the fob fails. A good contractor answers straight away; a vague answer tells you something useful.
Ready to look? The live board of office cleaning jobs shows current vacancies and their advertised shift windows across the UK.
Questions people ask
What time do office cleaners start work?
Early shifts usually start between 5am and 6am and finish by 8am, before staff arrive. Evening shifts commonly run 6pm to 9pm after the building empties. The exact window is set by the building's access and alarm arrangements, and the advert normally states it.
Can office cleaning be a full-time job?
Yes, but rarely on one contract. Most cleaners build a full week by stacking a morning shift and an evening shift, taking mobile multi-site roles, or adding weekend deep cleans. Daytime janitorial roles in large buildings and supervisor positions are the main single-contract full-time options.
Do I keep my hours if the cleaning company changes?
Usually, yes. When a building switches cleaning contractor, TUPE regulations normally transfer the cleaning staff to the incoming company on their existing pay, hours and length of service. The transfer itself is not a legal reason to cut your hours, and any changes afterwards have to follow a fair process.
- GOV.UK, "National Living Wage increases to £12.71 per hour", gov.uk/government/news/national-living-wage-increases-to-1271-per-hour. Accessed 17 July 2026.
- GOV.UK, "Business transfers, takeovers and TUPE", gov.uk/transfers-takeovers. Accessed 17 July 2026.
- Health and Safety Executive, "Protecting lone workers", hse.gov.uk/lone-working. Accessed 17 July 2026.
Last reviewed 17 July 2026. Shift windows reflect standard UK contract practice; pay figures checked against the sources above.