Subject: Leaving early. Hi [Manager], I have a bad migraine coming on and need to head home. I'll log off by [time]. Thanks, [Name].
By email
How to Email Your Boss About A migraine
When your workplace expects things in writing, a short email about a migraine keeps a clear record. Put the key facts up front.
Say what you need, briefly
A migraine makes screens and noise unbearable, so say you need to stop and rest. Keep it short — you may be in real discomfort.
Structure it as a short email
In an email, lead with a plain subject line, put the day and leaving time in the first line, add one line on how your work is covered, and keep a courteous sign-off. An email should be shorter than a chat message, not longer.
Example messages
Subject: Leaving early. Hi [Manager], A migraine has hit and I can't focus on a screen. I'll wrap up and leave by [time]. Thanks, [Name].
Subject: Leaving early. Hi [Manager], I'd rather leave now than let this migraine get worse; I'll pick things up tomorrow. Thanks, [Name].
Mistakes to avoid
Don't write a long paragraph or bury the ask. Put the day and leaving time in the first line so it's seen at a glance.
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This page shares wording ideas, not legal or HR advice. Follow your own employer's time-off policy.
Common questions
Do I need to call it a migraine?
No. Feeling unwell and needing to go home is enough.
Email or a quick message?
Use email where a written record is expected; a chat message is fine elsewhere.