The modern playbook for calling in sick:
When to notify
Before your shift starts. Earlier the better.
What to say
"Out sick today, will check Slack if urgent. Back tomorrow."
That's it.
Channel
- Slack / Teams — standard for modern offices.
- Email — also fine.
- Text — fine for managers you message regularly.
- Phone call — traditional industries, shifts, healthcare.
Match what your team does.
What to avoid
- Long explanations
- Multiple apology messages
- Posting on social media that day
- Calling out repeatedly without explanation
Returning to work
- Wait until you're not contagious.
- Be ready to function — coming back too early hurts you and your team.
- Brief catch-up message: "Back today, what did I miss?"
When you're chronically sick
If you're calling in sick frequently due to chronic illness:
- Talk to HR about accommodations
- Check if FMLA applies
- Document your conditions formally
Don't suffer through it silently.
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For more: how to call out of work, reasons to call out of work, excuses to call off work.
Frequently Asked Questions
- Do I need to call in sick or can I text?
- Text or Slack is fine at most modern workplaces. Phone calls are expected in traditional industries (healthcare, hospitality, finance).
- How much detail should I share?
- Minimal. 'Out sick today' is enough at most companies.
- Do I need a doctor's note?
- Most one-day absences don't require one. Multi-day absences or chronic patterns may.
- When should I return after being sick?
- When you're not contagious and can do your job. Stay home longer if you're contagious — your colleagues will thank you.