Overtime Rules Basics for Small Employers in the US and UK

Extra hours creep in quietly. A busy weekend, a sick colleague, a big order that has to ship, and suddenly someone has worked far more than their usual week. This guide explains the overtime rules basics for small employers in the US and UK, so you can pay people correctly, keep hours under control and avoid the costly surprises that come from guessing.

If you have just hired your first employee, or your small team is growing into longer opening hours, overtime is one of those topics that feels simple until it is not. Who counts as eligible? Does a bonus change the rate? What if someone stays late without asking? The good news is that the core ideas are easy to learn, and a few habits will keep you on the right side of them.

A quick note before we start: this article is general information about employment rules, not legal or tax advice. Overtime law varies by country, state and sometimes city, and the details change. Check official government sources and speak with an employment lawyer, an HR adviser or your accountant about your own situation.

Why overtime deserves your attention now

Mid-February is a good moment to look at hours. Many businesses are coming out of a quieter January and planning for spring, and Valentine's Day has just pushed restaurants, florists and gift shops through one of their busiest weekends. If people worked extra shifts, this is the week those hours land on a timesheet and in a pay run.

Getting overtime wrong rarely starts with bad intentions. It usually starts with something small: a salaried assistant who is not actually exempt, hours recorded in a notebook that goes missing, or a "we'll sort it out later" promise. Small mistakes repeated every week can add up to back pay, penalties and, just as important, a team that feels taken for granted.

US overtime rules: the basics

In the United States, the main federal law is the Fair Labor Standards Act (FLSA). Its overtime rule is short and worth memorizing.

The 40-hour workweek rule

The FLSA requires employers to pay non-exempt employees at least 1.5 times their regular rate of pay for every hour worked over 40 in a workweek. A workweek is a fixed, regularly recurring period of seven consecutive days that you define, for example Sunday to Saturday. Each workweek stands alone, so you generally cannot average hours across two weeks to avoid overtime.

Exempt vs non-exempt employees

Not every employee is entitled to overtime. Some roles are "exempt," which usually depends on how the person is paid and what their job actually involves, not on their job title. Paying someone a salary does not automatically make them exempt. The federal tests, and the salary levels that go with them, have changed over the years and can be affected by court decisions, so check the current rules from the US Department of Labor before you classify anyone.

State and local rules

Federal law sets a floor. Some states add their own overtime rules, including daily overtime for long shifts, and some have different exemption tests. When state and federal rules differ, employees are generally entitled to whichever is more protective. If you operate in more than one state, or your remote employees live elsewhere, check each location's rules.

What counts as hours worked

Overtime depends on hours worked, so it helps to know what counts. Time spent doing work you allow or know about generally counts, even if you did not ask for it. Common gray areas include answering messages after hours, opening or closing the shop, required training and short breaks. Write down your approach and check it against official guidance.

UK overtime rules: the basics

The UK approach is different, and many employers coming from US-style thinking are surprised by it.

No legal right to overtime pay

In the UK, there is no general legal right to be paid extra for overtime. Whether overtime is paid, and at what rate, depends on the employment contract. Some contracts offer time and a half, some offer the normal hourly rate, and some say overtime is unpaid and reflected in the salary. Whatever you agree, put it in writing.

The minimum wage check

Even when overtime is unpaid, there is a floor. A worker's average pay for all the hours they work in a pay reference period must not fall below the National Minimum Wage or National Living Wage for their age. This matters most for salaried staff on modest pay. If a salaried employee regularly works long extra hours, their effective hourly rate can drop below the legal minimum without anyone noticing. Rates change each April, so check GOV.UK for the current figures.

The 48-hour average limit

The Working Time Regulations set a limit of 48 hours a week on average, usually measured over a reference period of several weeks. A worker can choose to opt out of this limit, but it must be their choice, in writing, and they can cancel it with notice. You should not pressure anyone to sign. The regulations also cover rest breaks, daily and weekly rest and paid holiday, so long hours can affect more than just pay.

How to calculate overtime pay

For US non-exempt employees, the calculation follows a clear pattern. For UK staff, you follow the contract, then run the minimum wage check. Here is a simple process that works for both.

1. Fix your workweek. Choose a seven-day workweek and keep it consistent, for example Monday to Sunday.
2. Record every hour. Collect actual start and finish times, including early starts and late finishes, not just scheduled shifts.
3. Work out the regular rate. In the US, the regular rate can include more than the base hourly wage, such as some bonuses and shift premiums. Check which payments must be included.
4. Count the overtime hours. In the US, hours over 40 in the workweek, plus any state daily overtime. In the UK, whatever the contract defines as overtime.
5. Apply the rate. In the US, multiply overtime hours by at least 1.5 times the regular rate. In the UK, apply the contract rate.
6. Run the UK minimum wage check. Divide total pay for the period by total hours worked and compare it with the current legal minimum for that worker.
7. Keep the records. Store timesheets, approvals and pay calculations together.

A simple overtime tracking template

You do not need a complex system to start. Copy this table into a spreadsheet and add one row per person per week. The amounts are made-up examples.

Add a column for the effective hourly rate of UK salaried staff so the minimum wage check becomes routine instead of an afterthought.

Tools that make tracking easier

Time tracking apps such as Toggl Track, Harvest and Clockify can record hours, flag long weeks and export data for your payroll process. A shared spreadsheet also works for very small teams. Whatever you choose, check current features, pricing and privacy policies, and make sure employees can see and confirm their own hours.

Write a short overtime policy

A one-page policy prevents most arguments before they start. It does not need legal language, but it should be clear and match the law where you operate. Cover these points:

• Who is eligible. Which roles are non-exempt in the US, or which contracts include paid overtime in the UK.
• Approval. How overtime is requested and who approves it. Note that in the US, unapproved hours that were actually worked generally still need to be paid; you can manage the behavior separately.
• Recording. How hours are logged, by whom and by when.
• Rates. How overtime is paid, or that it is not separately paid in UK contracts where that applies.
• Limits and rest. Maximum hours, rest breaks and the UK 48-hour average limit and opt-out process.
• After-hours messages. Your expectations for email and chat outside working hours.

Share the policy when someone joins, and revisit it once a year or whenever the law changes.

Keeping overtime under control

Paying overtime correctly is the legal part. Managing it well is the business part. Regular overtime is often a signal that something needs to change.

• Look for patterns. If the same person or the same day keeps running long, the schedule may be wrong rather than the person.
• Plan for peaks. Seasonal busy periods are predictable. Hire part-time help or adjust shifts before the rush.
• Cross-train. When only one person can do a task, that person ends up staying late.
• Watch wellbeing. Long hours over many weeks raise the risk of mistakes, injuries and burnout.
• Budget for it. Include a realistic overtime line in your labor budget so it is a decision, not a surprise.

Frequently asked questions

The bottom line

Overtime rules basics come down to a few habits. In the US, know who is non-exempt and pay at least 1.5 times the regular rate for hours over 40 in a workweek, plus any state extras. In the UK, follow the contract, keep pay above the minimum wage for all hours worked and respect the 48-hour average limit unless someone has opted out.

Set up a simple tracker this week, write your one-page policy and look at last month's hours for patterns. A little structure now keeps your team paid fairly and your busy seasons calm.