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What to do if…
you are told to start working on-call immediately without prior agreement

Produced and maintained by PanicStation.org Published: Last reviewed: Editorial policy UK guide

Short answer

Do not agree on the spot. Get the on-call instruction and expectations in writing, then check what your contract, any agreed policy, and any collective agreement actually say before you accept a new on-call duty.

Do not do these things

  • Do not say “yes” or “I agree” just to stop the pressure if you have not checked your terms, pay, and rest arrangements.
  • Do not resign in the moment or send a message you may regret.
  • Do not ignore fatigue or safety concerns, especially if you drive, provide care, use machinery, or do safety-critical work.
  • Do not delete chats, texts, rota screenshots, call logs, or emails about the change.
  • Do not assume “standby” means “not work”; record any time spent answering calls, messages, remote logins, travel, or call-outs.

What to do now

  1. Get the instruction in writing, or write it back to them.
    Ask: “When does on-call start and end? What response time is expected? What counts as a call-out? Do I have to stay at home or within a certain distance? Who do I escalate to?”
    If they will not write it down, send a calm message summarising what you were told and ask them to confirm.

  2. Check what you already agreed to, not just the handbook.
    Look at your contract, offer letter, written statement of employment particulars, rota policy, and any on-call policy. Also check whether there is a collective agreement with a union or staff association, a flexibility clause, or a regular established pattern your employer may say became part of your terms over time.

  3. Do a quick restrictions, rest, and safety check before taking responsibility.
    Write down whether you must stay in a place, respond within a short time, stay sober, keep equipment open, monitor messages, or expect repeated calls. If tonight’s on-call duty is likely to disrupt sleep or create a safety risk, flag this immediately in writing and ask what rest arrangement applies before your next shift.

  4. Ask for pay and time-recording rules in one message.
    Ask them to confirm any standby allowance, call-out minimum, overtime, time off in lieu, and how to record time spent answering calls, messages, remote logins, travel, or call-outs. Keep the wording factual: “Please confirm the rate and how I record time spent working while on-call.”

  5. If you need to push back, use a temporary boundary.
    You can say: “I cannot agree to a new on-call requirement with no prior agreement. If emergency cover is needed tonight, I can discuss a one-off arrangement once the expectations, pay, and rest arrangements are confirmed in writing.”
    If you genuinely cannot do it because of childcare, health, fatigue, or another immediate issue, say that plainly and give the earliest time you can discuss cover.

  6. Start a simple evidence log now.
    Note when you were told, who told you, what restrictions were imposed, each contact or call-out, time spent working, and any effect on sleep or rest. Keep copies of rota changes and messages.

  7. Escalate quickly if threats start.
    If you are told you will be disciplined for not agreeing immediately, ask for that instruction in writing and contact HR, your union rep, or a staff representative. If you are called into a formal disciplinary or grievance meeting about this, make a reasonable request to bring a companion, usually a colleague or trade union representative. For confidential external advice in England, Scotland, or Wales, contact Acas. If you are in Northern Ireland, contact the Labour Relations Agency.

What can wait

  • You do not need to decide today whether to stay in the job long-term.
  • You do not need to submit a formal grievance immediately; first secure the facts in writing and keep records.
  • You do not need to prove the law in the moment; focus on written expectations, pay and timekeeping rules, and safety or rest concerns.
  • You do not need to solve the whole rota problem yourself.

Important reassurance

Being put on the spot with “this is mandatory” can feel intimidating. Asking for written confirmation and checking your agreed terms is a normal, professional response, and it can protect you from misunderstandings later.

Scope note

These are first steps for the first hours or day. If the issue becomes ongoing pressure, unpaid work, a working-time problem, or disciplinary action, you may need specialist employment support.

Important note

This is general information, not legal advice. Whether on-call time counts as working time, whether a change can be imposed, and what pay is due depend on your contract terms, any collective agreement, where you must be, how restricted you are, and what work you actually do. If fatigue or safety is a concern, prioritise safety and document it promptly in writing.

Additional Resources

Closely connected guides that may be useful during the same situation or its immediate aftermath.

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

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