How Many Hours Is Considered Full-Time? UK, US and Australia (2026 Guide)

Short answer: it depends on the country. In the UK there is no legal definition; full-time usually means 35 hours or more. In the US the employer decides, with two legal anchors: 30 hours for health-coverage purposes and 40 as the overtime trigger. In Australia full-time is written into law: 38 hours per week plus reasonable additional hours.

Ask "how many hours is full-time?" in London, New York and Sydney and you get three different kinds of answer: a convention, an employer policy and a statute. That difference is not trivia. It decides who gets benefits, how leave accrues, and where overtime starts. This guide gives you the thresholds for the UK, the US and Australia, the conversion tables into monthly and yearly hours, and what changes for leave when someone works less than full-time.

United Kingdom: no definition, a ceiling and a convention

UK law never defines full-time. Official guidance says a full-time worker "will usually work 35 hours or more a week", and in practice most full-time contracts sit between 35 and 40 hours. What the law does set is a ceiling: under the Working Time Regulations 1998, average working time must not exceed 48 hours a week, averaged over a 17-week reference period, unless the worker signs a voluntary opt-out they can later cancel.

Actual behaviour sits well below the ceiling: the average full-time week measured by the Office for National Statistics hovers around 37 hours. Whatever the contract says, statutory paid holiday is 5.6 weeks per year, which caps at 28 days for a five-day week and may include bank holidays.

United States: the employer decides, the law sets thresholds

The Fair Labor Standards Act deliberately does not define full-time or part-time employment: that is left to the employer. What federal law defines instead are two thresholds that do most of the practical work:

• 40 hours: the overtime trigger. Non-exempt employees must earn at least 1.5 times their regular rate for hours beyond 40 in a workweek.
• 30 hours per week, or 130 hours per month: the IRS definition of a full-time employee for the ACA employer mandate, which decides when larger employers must offer health coverage.

For its labor statistics, the Bureau of Labor Statistics draws the line at 35 hours. And there is no federal right to paid vacation: paid time off is a market norm (around 11 days after one year of service, on average, in private industry), not a statutory one. State law adds its own layers; California, for instance, requires daily overtime beyond 8 hours in a single day.

Australia: 38 hours, written into law

Australia is the clearest of the three. The National Employment Standards set a maximum of 38 ordinary hours per week for a full-time employee, plus "reasonable additional hours". Part-time means fewer than 38 hours on a regular, predictable pattern, with the same entitlements pro-rated. Casual employees are a separate category: no paid leave, compensated by a loading of around 25% on top of the base rate.

Leave entitlements attach to the 38-hour baseline: 4 weeks of annual leave (5 for some shift workers) and 10 days of paid personal/carer's leave, both pro-rated for part-time. Modern awards then set the concrete hour patterns per industry, and the right to disconnect now protects employees of businesses of every size from unreasonable out-of-hours contact.

The three countries at a glance

Full-time in hours per month and per year

monthly hours = weekly hours x 52 weeks / 12 months

The payroll convention, precomputed for the thresholds you just met. These averages never change from year to year:

These are calendar-independent averages. A real month swings with weekdays and public holidays: our guides on monthly working hours, working days in a year and work weeks in a year cover the real-calendar math.

Part-time, pro-rata and the leave math

Below the full-time line, everything scales. A UK part-timer keeps the 5.6-week entitlement in proportion to their working pattern; an Australian part-timer accrues the 4 weeks pro-rata; a US part-timer gets whatever the employer's policy grants, which is why the ACA's 30-hour line matters so much there. The mechanics are the same everywhere: leave is earned on the days or hours someone actually works.

That is precisely where generic tools break: they assume everyone works Monday to Friday. In Bueggio HR each person can have their own personal working week (four days, three days, any pattern), their own public-holiday country from 45+ supported calendars, and their own allowances: the engine deducts leave only on days that person actually works, and everyone sees their remaining balance without asking.

Mixed teams: the real question is who's in today

Once a team mixes a 40-hour contract, a 30-hour ACA-full-timer and a three-day part-timer, "how many hours is full-time?" becomes a daily planning question: who is actually in tomorrow? A shared wall chart that knows each person's working pattern answers at a glance, with requests approved in one click from email, Slack or Teams. Our guide to leave management software covers how to choose one; Bueggio HR costs €1.30 per user per month with the first month free, no card required.

Frequently asked questions

Is 30 hours a week considered full-time?

It depends on where you are and who is asking. In the US, 30 hours per week (or 130 hours per month) is the IRS threshold that makes someone full-time for employer health-coverage purposes under the ACA. For UK purposes, official guidance says full-time usually means 35 hours or more, and in Australia anything below 38 regular hours is part-time. So 30 hours is full-time for a US benefits calculation and part-time almost everywhere else.

Is 40 hours a week full-time?

Yes, everywhere: 40 hours comfortably clears every threshold. The nuance is what 40 means legally. In the US it is the overtime trigger (non-exempt employees earn at least time and a half beyond it), not a definition of full-time. In the UK it sits at the top of the typical 35 to 40 range. In Australia it exceeds the 38 ordinary hours, so the extra time must qualify as reasonable additional hours.

How many hours is full-time per year?

Multiply the weekly hours by 52. The US benchmark is 2,080 hours (40 x 52), Australia's 38-hour week gives 1,976, and a UK 35-hour week gives 1,820. All three are paper figures: real worked hours are lower once you subtract public holidays, vacation and sick days.

Methodology and sources

Monthly and yearly figures follow the standard payroll convention (weekly hours x 52 / 12). Legal frameworks referenced: UK guidance on part-time worker rights and the 48-hour weekly maximum (Acas); the US Department of Labor on full-time employment under the FLSA and the IRS on identifying full-time employees for the ACA; Australia's Fair Work Ombudsman on full-time employees and maximum weekly hours. Employment law moves: for decisions with legal weight, check the current official text and your contract.