Time Off in Lieu — commonly known as TOIL — is one of those workplace arrangements that almost every UK employer uses but surprisingly few manage properly. An employee works extra hours, and instead of receiving overtime pay, they “bank” that time to take off later. Simple enough in theory, yet in practice TOIL can become a compliance headache, a source of employee disputes, and a financial liability if it is not tracked and governed by a clear policy.

This guide covers everything UK employers need to know about TOIL: the legal framework, how it interacts with the Working Time Regulations and annual leave, how to draft a robust TOIL policy, tax implications, and the common pitfalls that trip employers up.

What Is TOIL and How Does It Work?

TOIL stands for Time Off in Lieu. “In lieu” simply means “instead of.” When an employee works beyond their contracted hours, the employer offers equivalent time off at a later date rather than paying overtime.

For example, if an employee works an additional four hours on a Saturday to meet a project deadline, the employer grants them four hours off during the following week. The extra hours are compensated with rest rather than money.

TOIL vs Overtime Pay

The key distinction is straightforward:

Overtime pay: The employee works extra hours and receives additional pay, often at a premium rate (e.g., time-and-a-half or double time).
TOIL: The employee works extra hours and receives equivalent time off instead of additional pay.

From a cash-flow perspective, TOIL is attractive to employers because it avoids the immediate cost of overtime payments. From the employee’s perspective, TOIL can be preferable when they value flexibility and time off more than extra income.

TOIL vs Flexitime

TOIL and flexitime are related but distinct concepts:

Flexitime is an ongoing arrangement where employees have flexibility around their start and finish times, often with core hours they must work. Hours are tracked on a rolling basis, and employees can accumulate credit or debit hours within agreed limits.
TOIL is typically a more formal, case-by-case arrangement where specific overtime hours are “banked” and then taken as time off, usually with management approval at both ends.

Some organisations operate hybrid systems that blend elements of both, which is perfectly acceptable provided the rules are documented clearly.

The Legal Position: Is There a Right to TOIL in the UK?

There is no statutory right to TOIL in the UK. No legislation requires employers to offer time off in lieu of overtime, nor is there any law requiring employees to accept TOIL instead of overtime pay.

Whether TOIL is available depends entirely on:

The employment contract — Does it specify overtime compensation arrangements?
Company policy — Is there a written TOIL policy?
Custom and practice — Has the employer consistently offered TOIL over time, potentially creating an implied contractual term?

This third point is important. If an employer has routinely offered TOIL for years without a formal policy, employees may argue that TOIL has become an implied term of their contract. This makes it difficult to withdraw the arrangement without proper consultation. The safest approach is always to have a written policy that explicitly states TOIL is discretionary.

Working Time Regulations 1998: The 48-Hour Limit

While there is no specific TOIL legislation, the Working Time Regulations 1998 (WTR) set critical boundaries that affect how TOIL operates.

The headline rule is that workers must not work more than an average of 48 hours per week, calculated over a 17-week reference period (extendable to 26 weeks by collective agreement, or 52 weeks in special cases).

This means:

Even if an employee agrees to work extra hours in exchange for TOIL, the employer must ensure the 48-hour weekly average is not breached during the reference period.
Employees can opt out of the 48-hour limit by signing a written opt-out agreement, but this must be genuinely voluntary — and even with an opt-out, employers retain a duty of care.
The TOIL time off itself does not retrospectively reduce the hours worked. If an employee works 55 hours in week one and takes TOIL in week three, the 55 hours still count for week one in the reference period calculation.

Rest Breaks and Rest Periods

The WTR also mandate:

Daily rest: 11 consecutive hours between working days
Weekly rest: 24 uninterrupted hours off per seven-day period (or 48 hours per 14 days)
In-work rest break: 20 minutes when the working day exceeds six hours

Overtime hours that generate TOIL must not cause breaches of these rest requirements. If an employee stays late to finish a project, they must still get their 11 hours of daily rest before the next shift.

How TOIL Interacts With Annual Leave

TOIL and statutory annual leave are separate entitlements, and employers must keep them distinct.

Under the Working Time Regulations, all workers are entitled to 5.6 weeks of paid annual leave (28 days for a full-time worker). This entitlement cannot be replaced by TOIL, nor can TOIL be used to “top up” annual leave that has been denied.

Key points:

TOIL does not count as annual leave unless the employer’s policy explicitly states otherwise (which is generally inadvisable).
Employees cannot be forced to use annual leave instead of TOIL they have accrued, unless the policy makes this clear.
On termination, accrued but untaken statutory annual leave must be paid out. TOIL, however, depends on the contract and policy — there may or may not be a payment obligation for unused TOIL.

The safest approach is to maintain separate balances for annual leave and TOIL, with clear rules about what happens to each on termination.

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Creating a Fair and Compliant TOIL Policy

A well-drafted TOIL policy protects the employer and provides clarity for employees. Here are the essential elements to include:

1. Eligibility

Define who can accrue TOIL. Consider:

Is TOIL available to all employees, or only certain roles or grades?
Are senior managers or those with autonomous working patterns excluded?
Does it apply to both full-time and part-time staff?

2. Pre-Approval Requirements

Specify that overtime must be authorised in advance before TOIL can be accrued. This prevents employees from unilaterally working extra hours and then claiming time off. The policy should state:

Overtime must be requested or agreed by the line manager before the additional hours are worked.
Unauthorised overtime will not qualify for TOIL.

3. Accrual Rate

Decide whether TOIL is accrued on a like-for-like basis (one hour worked equals one hour off) or at an enhanced rate (e.g., time-and-a-half for weekends). Most UK employers use a straight hour-for-hour exchange, but there is no legal requirement either way.

4. Maximum Accrual Cap

This is arguably the most important element. Without a cap, TOIL can accumulate indefinitely, creating a growing liability. Set a maximum — for example:

No more than two days (or 16 hours) of TOIL may be accrued at any time.
TOIL exceeding the cap will not be approved.

5. Time Limit for Using TOIL

Set a use-it-or-lose-it deadline. Common approaches include:

TOIL must be taken within four weeks of being accrued.
TOIL must be taken within the same calendar month or pay period.
Unused TOIL expires at the end of the deadline and is not paid out.

Ensure the deadline is reasonable and that employees genuinely have the opportunity to take the time off.

6. Booking Process

Specify how TOIL is requested and approved:

Must TOIL be booked through the same system as annual leave?
How much notice is required?
Can the manager refuse a TOIL request due to business needs?

7. Record-Keeping

State that all TOIL — both accrual and usage — must be recorded. The employer is responsible for maintaining accurate records, particularly given the WTR obligations.

8. Termination Provisions

Clarify what happens to unused TOIL when employment ends:

Will unused TOIL be paid out on termination?
At what rate — the employee’s normal hourly rate, or the overtime rate?
Or does unused TOIL simply expire?

9. Discretionary Nature

Include a clear statement that TOIL is offered at the employer’s discretion and does not form a contractual entitlement. This preserves the employer’s ability to amend or withdraw the policy in the future (subject to proper consultation).

Record-Keeping Requirements

While there is no specific legal requirement to keep TOIL records, the Working Time Regulations do require employers to keep records sufficient to demonstrate compliance with the 48-hour weekly limit. Since TOIL involves additional hours worked, accurate tracking is essential.

Best practice record-keeping for TOIL includes:

Date and hours of overtime worked
Manager approval for the overtime
TOIL accrued (hours or days)
Date TOIL was taken
Running balance of TOIL owed

Many employers still track TOIL on spreadsheets or informal notes, which is a recipe for disputes. When an employee claims they are owed three days of TOIL and the manager says it was only one, whoever has the better records wins.

Tax Implications of TOIL

TOIL itself — time off taken in exchange for extra hours worked — is not a taxable benefit. The employee is simply receiving their normal pay for their contracted hours and taking additional rest time instead of additional pay.

However, there are tax considerations in specific scenarios:

If unused TOIL is paid out on termination, the payment is treated as earnings and is subject to income tax and National Insurance contributions, just like any other wages.
If TOIL is converted to a cash payment during employment (rather than being taken as time off), it is taxable as earnings.
If an employer pays overtime AND grants TOIL for the same hours, there is clearly a problem — the employee is being compensated twice, and both the overtime pay and the equivalent value of the TOIL would be taxable.

The tax position is generally simple: TOIL taken as time off has no separate tax consequence. TOIL converted to money is taxed as income.

Common TOIL Pitfalls and How to Avoid Them

1. TOIL Accruing Indefinitely

Without a cap or expiry, TOIL balances can grow to alarming levels. An employee who works overtime regularly might accumulate weeks of TOIL, creating a significant liability — especially if the policy requires a cash payout on termination.

Solution: Set a maximum accrual limit and a clear expiry period. Monitor balances monthly.

2. Managers Not Tracking TOIL

When TOIL is managed informally through verbal agreements and sticky notes, disputes are inevitable. Managers move on, memories fade, and employees are left with unverifiable claims.

Solution: Use a centralised system to record all TOIL. Ensure every hour accrued and taken is logged with dates and approvals.

3. Employees Working Unauthorised Overtime

Some employees may work extra hours without approval and then expect TOIL. This creates pressure on managers and can disrupt scheduling.

Solution: Require pre-authorisation for all overtime. State clearly in the policy that unauthorised overtime does not qualify for TOIL.

4. TOIL Undermining the 48-Hour Limit

Employers sometimes assume that granting TOIL “cancels out” the extra hours for Working Time Regulations purposes. It does not. The hours worked still count towards the 48-hour weekly average.

Solution: Monitor total hours worked (including overtime) against the 48-hour average, regardless of whether TOIL is granted.

5. No Clear Termination Provisions

When an employee leaves with a significant TOIL balance and the policy is silent on what happens, the employer faces a difficult decision. Paying out may be costly; refusing may lead to a grievance or tribunal claim.

Solution: Address termination explicitly in the TOIL policy. Most employers either require TOIL to be used during the notice period or cap the amount payable on exit.

6. TOIL Becoming a De Facto Contractual Right

If TOIL has been offered consistently for years without a policy stating it is discretionary, it may become an implied contractual term. Withdrawing it then requires consultation and potentially consent.

Solution: Include a clear discretionary clause in the policy from the outset. Review the policy regularly and communicate any changes.

Best Practices for Managing TOIL Requests

Effective TOIL management requires a balance between flexibility for employees and operational control for the business:

Use a single system for all leave types. Track TOIL in the same platform as annual leave, sick leave, and other absences. This gives managers a complete picture of who is off and when.
Set approval workflows. TOIL requests should go through the same approval process as annual leave requests. This prevents ad hoc arrangements that are impossible to track.
Review balances regularly. Run monthly reports on TOIL balances. If employees are consistently accruing more TOIL than they take, investigate whether they genuinely have the opportunity to use it.
Encourage timely use. Remind employees to take their TOIL within the policy deadline. Managers should actively facilitate this — there is no point offering TOIL if the workload makes it impossible to take.
Audit compliance quarterly. Check that overtime hours (including those generating TOIL) are not pushing employees beyond the 48-hour weekly average or breaching rest requirements.
Train managers. Ensure all line managers understand the TOIL policy, the approval process, and their responsibility for accurate record-keeping.

How Leave Balance Helps You Manage TOIL

Managing TOIL alongside annual leave, sick leave, and other absence types can be challenging — particularly when you have employees across multiple locations or working patterns. Spreadsheets quickly become unmanageable, and informal tracking leads to disputes.

Leave Balance lets you create custom leave policies, including TOIL, with their own accrual rules, caps, and expiry dates. Every hour accrued and taken is logged automatically, giving you a complete audit trail. Employees can request TOIL through Slack or Microsoft Teams, and managers can approve or decline with a single click.

With a flat rate of $10/month for unlimited employees and policies, there is no per-user cost scaling as your team grows. You get multi-country support for organisations with staff in different jurisdictions, and full visibility into all leave balances from a single dashboard.