There is no statutory minimum notice for calling in sick in the UK. No law says you must ring in an hour before your shift, or by 9am, or before your start time. The rule that binds you comes from your employment contract or absence policy — and separately, the Statutory Sick Pay regulations cap how demanding that rule is allowed to be.
Those are two different sources of obligation and they are constantly confused. Your contract can create a disciplinary consequence for late reporting. Only the SSP rules decide whether your employer can dock the pay.
Key Takeaways
- No statutory minimum notice exists. The reporting deadline is set by your contract or absence policy.
- For SSP purposes, you must notify within the employer’s own time limit, or 7 days if they have not set one (GOV.UK).
- Your employer cannot require notice earlier than the first qualifying day, or at a specified time on that day, under regulation 7(5) of the SSP (General) Regulations 1982.
- Breaching a contractual reporting rule is a conduct issue, separate from whether SSP is payable.
Is There a Legal Minimum Notice for Calling in Sick?
No. Unlike annual leave, where regulation 15 of the Working Time Regulations 1998 sets out default notice periods, there is no equivalent statutory notice rule for sickness absence. The reason is obvious once stated: sickness is not something you can schedule notice for.
What the law does instead is regulate the maximum an employer can demand for SSP purposes. It sets an outer boundary rather than a minimum obligation. Inside that boundary, employers are free to write their own rule, and almost all of them do — “call your line manager before your shift start time” is the standard formulation.
So the honest answer to “how much notice must I give?” is: whatever your policy says, and if your policy is silent, as soon as reasonably possible.
What Does Your Contract Usually Require?
Most UK absence policies specify four things. If yours does not, it is under-written.
- A deadline. Typically before the start of your shift, or within a fixed window such as one hour before start time.
- A method. Phone call to a named person is still the most common, precisely because employers want a conversation rather than a text.
- A recipient. Line manager, with a named fallback if unavailable.
- What you must say. Usually the nature of the illness at a general level and your expected return date.
Where a policy insists on a phone call and you send a WhatsApp message, you have technically breached the policy. That is a conduct question, and repeated breaches can be handled through the disciplinary procedure. It is not, on its own, a reason to withhold SSP — see the next section.
Can your employer insist you speak to your manager in person?
Not for SSP purposes. The HMRC Statutory Payments Manual is explicit that an employer cannot insist notification is given “in person”, nor “on a document supplied by the employer”, “on a medical certificate”, or “on a printed form” (SPM110300).
An employer can still ask for a phone call as a matter of policy, and treat a persistent refusal as a conduct matter. What they cannot do is use the failure to phone as the reason SSP is not paid.
What Are the SSP Notification Rules?
This is the part with hard edges. Four rules from the SSP (General) Regulations 1982, as summarised in HMRC’s own manual.
| Rule | What it means |
|---|---|
| Default deadline | Notify within the employer’s stated time limit, or 7 days if none is set |
| No pre-emptive deadline | The employer cannot require notice earlier than the first qualifying day of the period of incapacity, or by a specified time on that day |
| Frequency cap | The employer cannot require notification more than once every 7 days during the absence |
| Form cap | Cannot insist on notification in person, on the employer’s form, on a printed form, or on a medical certificate |
The second rule is the one that quietly defeats a lot of policies. A qualifying day is a day you would normally work. If your policy says “you must call by 8am on the first day of absence” and your shift starts at 8am, that is a specified time on the first qualifying day, and it does not bind for SSP purposes.
What happens if you report late?
Your employer can withhold SSP for the days that were notified late — but only those days, and only if there was no good reason for the delay. GOV.UK puts it as: “You do not have to pay Statutory Sick Pay (SSP) for any days the employee was late in telling you (unless there’s a good reason for the delay).”
“Good reason” is doing real work here. Someone admitted to hospital unconscious on a Monday and reporting on the Thursday has a good reason. Someone who forgot does not.
A Worked Case: Two Different Consequences From One Late Call
Ravi’s contract says he must telephone his line manager by 7am. He wakes with severe flu on Monday, sleeps through, and messages his manager on Slack at 2pm.
- SSP: payable in full. Monday is his first qualifying day, and the employer cannot require notice by a specified time on it. Slack is a valid method for SSP purposes; the employer cannot insist on a phone call.
- Contract: breached. He did not follow the policy. If this is a first occurrence it is a return-to-work conversation. If it is the fifth, it is reasonably a conduct matter.
Two separate tracks, two separate outcomes, from one set of facts. Employers who collapse them into one — docking pay as a punishment for a policy breach — are the ones who end up in an unlawful deduction from wages claim.
When Does a Fit Note Come Into It?
Not for a week. You can self-certify for absences of 7 days or fewer, including non-working days. Beyond 7 days in a row your employer can ask for a fit note. Importantly, GOV.UK confirms that an employer “cannot withhold SSP if the employee is late sending you a fit note” — the notification rules and the evidence rules are separate.
Our guide to fit notes and doctor’s notes for sick leave in the UK covers who can issue one and what the “may be fit for work” option means.
What This Means for You
Employees: follow your policy to the letter, because that is what you can be disciplined for. Report as early as you reasonably can, use the method your policy names, and if you cannot meet the deadline, say why when you do get through.
Employers: audit your absence policy against the four SSP rules above. In our experience the most common defect is a hard reporting deadline that falls on or before the start of the first qualifying day — a clause that is unenforceable for the purpose most employers think they are using it for. Fix the wording, and keep the pay decision separate from the conduct decision.
If you also need the pay side, our UK Statutory Sick Pay guide covers the 2026/27 rate and eligibility, and absence management covers what to do with the pattern once you can see it.
Leave Balance timestamps every sickness report the moment it is logged, from Slack or the web, so the notification record is contemporaneous rather than reconstructed. Flat $10/month, unlimited employees, 14-day free trial.
leave emails? Track your employee's leave with Leave Balance
This article is general information, not legal advice. Statutory entitlements described are correct as at July 2026; check GOV.UK or take advice for your specific circumstances.