The first time an employee asks about their employment rights as a carer, most UK employers have seven days to get it right. That is not a figure of speech. The carer's leave rules carry a written response deadline of seven days in some cases. Miss it and you lose options you did not know you had. 

The scale of this is bigger than most owners expect. Census 2021 counted 5.8 million unpaid carers in the UK, and nearly 3 million carers hold a paid job. Carers UK research found 2.6 million people have given up work to care. That is 600 people a day. In a firm of 40 staff, the odds say several people are already caring for someone. Most have never used the word "carer" about themselves. 

This guide covers what the law now gives those employees, the carer's leave rules that catch employers out, a day-by-day plan for the first week after a request, and how carer's leave interacts with flexible working. It is written for the owner or manager handling this without an HR department. The rights described apply in England, Scotland and Wales. Northern Ireland has its own employment law, and carer's leave and the day-one flexible working rules described here do not apply there. 

Employment rights as a carer: the four rights that apply 

Employment rights as a carer are not one right. They are a stack of four. Each has its own rules and its own tribunal risk. 

1. Carer's leave. One week of unpaid leave every 12 months, from day one of employment, under the Carer's Leave Act 2023. 
2. Time off for dependants. A separate, older right to reasonable unpaid time off for emergencies involving a dependant. No notice period applies. 
3. Flexible working. The right to request a change to hours, days or place of work from day one, with strict process rules on you as the employer. 
4. Protection from detriment and dismissal. Under the Carer's Leave Regulations 2024, an employee must not be punished for taking or seeking carer's leave. A dismissal for that reason is automatically unfair. 

The skill is matching the situation to the right regime. An emergency this morning is time off for dependants. A planned hospital appointment next month is carer's leave. A permanent change to working days is a flexible working request. Employers who treat all three as one informal favour lose the paper trail that protects them. 

Carer's leave UK rules: what employers get caught by 

The Carer's Leave Act 2023 came into force on 6 April 2024. It gives every employee, from their first day, up to one week of unpaid carer's leave in any 12-month period. A week means the employee's normal working week. Someone who works three days a week gets three days of carer's leave. 

The leave is for giving or arranging care for a dependant with a long-term care need. GOV.UK defines that as an illness or injury expected to need care for more than three months, a disability under the Equality Act 2010, or care needs related to old age. The dependant does not have to be family. An elderly neighbour who relies on the employee counts. 

Five specifics catch employers out. 

1. You cannot ask for evidence. The employee does not have to prove the dependant's care needs. Asking for a GP letter is not a compliance step. It is a detriment risk. 
2. The request does not have to be in writing. A conversation counts. Your process has to capture verbal requests or the record will not exist when you need it. 
3. The notice rules are short. Half a day or a full day needs at least three days' notice. Anything longer needs notice of at least twice the leave requested. Two days of leave means four days' notice. 
4. You cannot refuse. You can only postpone, and only if the absence would cause serious disruption to the business. If you postpone, you must agree a new date within one month of the requested date. You must also put the reason and the new date in writing within seven days of the original request, and before the leave was due to start. 
5. The entitlement is in half-day units. Employees can take a whole week, single days or half days spread across the year. Your absence records need to track a rolling 12-month total, not a calendar-year one. 

Point 4 is where the week-one framing comes from. The seven-day written notice deadline is shorter than most SMEs' normal response time to anything. If the leave was requested at short notice, your window is shorter still. 

One more rule worth knowing. An employee caring for two or more people still gets one week per 12 months in total, not one week per dependant. They can split it across dependants as they choose. 

Pay, terms and variable-hours staff 

Carer's leave is unpaid unless you choose otherwise. Acas confirms an employer can pay for it but does not have to. If you do enhance it, put the terms in your policy, because an informal habit of paying becomes an expectation fast. 

Everything else about the employment continues as normal. Under the Carer's Leave Regulations 2024, the employee's terms and conditions are preserved during the leave, and they return to the same job on terms no less favourable. Holiday keeps accruing. Seniority and pension rights are unaffected. 

For employees on variable hours, GOV.UK sets the calculation. Add up the hours worked in the previous 12 months, then divide by 52. Someone who worked 780 hours across the year has a carer's leave entitlement of 15 hours. For an employee with less than a year's service, divide by the number of weeks worked instead. Run the sum when the request arrives, and keep it with the absence record. 

Your first seven days: a response plan 

Here is what the first week looks like when a carer's leave request lands. The working title of this piece is the week one guide because the sequencing matters more than the policy wording. 

Days one and two: classify, do not improvise. Establish which right is in play. If the employee needs to leave now because their father fell this morning, that is time off for dependants. Let them go. If they need next Thursday and Friday for a planned care assessment, that is carer's leave, and the notice clock is already running. Write down the date and time the request was made, even if it was made in a corridor. 

Days three and four: respond in writing. Confirm the dates, confirm the leave is unpaid, and confirm their job and terms are unaffected. If you genuinely cannot cover the absence, this is your postponement window. Check the test honestly. Serious disruption means the business cannot reasonably cope, not that cover is inconvenient. If you postpone, the written reason and the new agreed date must go to the employee within seven days of the request, and the new date must fall within a month of the original one. 

Days five to seven: record and plan. Log the leave against a rolling 12-month entitlement in half-day units. Most SME absence systems have no carer's leave category, so it gets buried under unpaid leave. That is a problem two requests later, when you cannot evidence how much entitlement is left. Create the category now. Then look ahead. One statutory week rarely covers a real caring situation, so expect a follow-up conversation about ongoing flexibility. 

Here is the practitioner insight most guides miss. The protection from detriment in regulation 11 covers more than leave already taken. It also protects an employee where the employer believed they were likely to take carer's leave. Passing someone over for a project because you suspect their mother's diagnosis will mean time off is a detriment claim before a single day of leave is requested. Brief your managers on that specific point. It is the one they will not guess. 

And if a postponed or mishandled request ends with the employee taking the days anyway, pause before treating it as a conduct matter. Read our guide to handling unauthorised absence first. Disciplining someone for absence connected to a botched carer's leave process converts a small problem into an automatic unfair dismissal risk. 

The flexible working interplay 

Carer's leave is a sticking plaster. One unpaid week does not solve a caring situation that runs for years. The structural tool is a flexible working request, and the two rights interact more than most employers realise. 

Since 6 April 2024, flexible working is a day-one right to request. An employee can make two statutory requests in any 12-month period. You must deal with each one in a reasonable manner, consult the employee before refusing, and decide within two months unless you agree an extension. Refusal is only lawful on one of the eight business grounds listed in legislation, and the Acas Code of Practice on flexible working requests sets the standard a tribunal will measure you against. One more change is expected in 2027: under the Employment Rights Act 2025 you will also need to show the refusal itself was reasonable, so record the reasoning behind every refusal now. If you agree the change, the contract should be updated within 28 days of approving the request. 

The interplay creates three traps. 

1. Two clocks can run at once. An employee can take carer's leave while their flexible working request is being considered. Postponing the leave because the request is pending is not one of your options. 
2. The requests are legally different animals. A carer's leave request cannot be quietly converted into a flexible working discussion, and vice versa. Answer each under its own rules, in writing, even when one conversation raised both. 
3. Refusals carry discrimination risk beyond the process rules. Carers UK reports 59% of unpaid carers in England and Wales are female, so a blanket no-flexibility stance can found an indirect sex discrimination claim. And treating someone worse because they care for a disabled person can amount to discrimination by association under the Equality Act 2010. The claim belongs to the carer, even though the disability belongs to someone else. 

We cover the full request process, including the statutory grounds and response templates, in our maternity, adoption leave and flexible working rights guide. The mechanics are identical whether the request comes from a new parent or a carer. 

Where the Employment Rights Act 2025 fits 

Carer's leave was a day-one right before day-one rights were fashionable. The Employment Rights Act 2025 extends day-one status across a much wider set of entitlements, and it changes the risk picture around dismissing anyone who has recently exercised a statutory right. The carer's leave framework described above still applies as set out on GOV.UK at the time of writing. For what the 2025 Act changes for a small employer, and when each change lands, read our Employment Rights Act 2025 summary for SMEs. 

The practical takeaway does not change. Get the carer's leave and flexible working processes right now, while request volumes are low, and the wider day-one world holds no terror. 

Check your position before the first request lands 

Most employers find out their carer's leave process is missing when the first request is already in play. By then the seven-day clock is running and the options are narrowing. 

Frequently asked questions

How much carer's leave is an employee entitled to?

Up to one week of unpaid carer's leave in any 12-month period, from the first day of employment. A week means the employee's normal working week, so someone who works three days a week gets three days. It can be taken as a whole week, single days or half days, tracked over a rolling 12 months.

Is carer's leave paid?

No. Carer's leave is unpaid unless you choose otherwise, and Acas confirms an employer can pay for it without having to. If you enhance it, put the terms in your policy. Everything else continues as normal: terms and conditions are preserved during the leave, holiday keeps accruing, and the employee returns to the same job.

Can an employer refuse carer's leave?

No. You can only postpone it, and only if the absence would cause serious disruption to the business. The written reason and the new date must reach the employee within seven days of the request and before the leave was due to start. The new date must fall within one month of the original one.

Who can an employee take carer's leave for?

A dependant with a long-term care need: an illness or injury expected to need care for more than three months, a disability under the Equality Act 2010, or care needs related to old age. The dependant does not have to be family. An elderly neighbour who relies on the employee counts. Two or more dependants share one week.

What can carer's leave be used for?

Giving or arranging care for a dependant with a long-term care need. In practice that means planned care, such as a hospital appointment next month or a care assessment next week. The employee does not have to prove the dependant's care needs, and asking for a GP letter is a detriment risk rather than a compliance step.

Can an employee take time off work to help a family member?

Yes, under one of three rights, depending on the situation. An emergency this morning is time off for dependants: reasonable, unpaid and with no notice period. Planned care for a long-term need is carer's leave, with three days' notice for up to a day. A permanent change to working days is a flexible working request, a day-one right.

The free HR Health Check takes under a minute and lets you know where your people risks sit, scored Red, Amber or Green across the areas tribunals care about. If leave rules, absence records or flexible working requests are a gap, it will surface before an employee finds it for you. 

Take the free HR Health Check 

Richard, Director, OES HR