How Much Detail Should You Share When You're Sick?

There's a common instinct, when calling in sick, to justify it — to list symptoms, explain how bad you feel, maybe even mention when it started. None of that is required. "I'm unwell" is a complete, professional reason on its own.

Why the instinct to overshare happens

It usually comes from a place of not wanting to seem like you're making it up, or worrying a short message looks like you're not taking it seriously. In practice, the opposite is often true — a calm, brief message signals confidence, while a long list of symptoms can read as trying too hard to prove something nobody doubted in the first place.

A simple guide to how much to share

• Bare minimum (always fine): "I'm unwell and won't be in today." No reason required at all.
• General category (usually enough): "I'm dealing with flu-like symptoms" or "I've got a stomach bug." Gives context without detail.
• Multi-day heads-up (helpful, not required): "I might be out a couple of days — I'll keep you posted." Useful if you already suspect it won't be a one-day thing.
• Specifics (only if you want to, or it's asked for): Actual symptoms, diagnosis, or medical detail. This is genuinely optional in almost every workplace, and in many places protected information you're not obligated to disclose.

When more detail actually helps

There are a few situations where a little more context is genuinely useful — not because it's required, but because it helps others plan. If you're contagious and worried about exposing coworkers, saying so ("possible COVID symptoms, isolating as a precaution") helps people make informed decisions. If you're going to be out longer than a day, flagging that early saves your manager from having to ask. Outside of situations like these, the general category is almost always enough.

A few quick tips

• You're not obligated to justify being sick. Needing rest is a valid reason on its own.
• Mental health days deserve the same treatment. "I need to take a mental health day" doesn't need further explanation any more than a physical illness would.
• If asked for more, a short category is usually enough. You can decline to go further without being unprofessional about it.
• Match detail to duration. A single day off needs almost nothing extra; a longer absence benefits from a bit more context so people can plan around it.