15 good excuses, ranked roughly by believability:

Most believable

  1. Stomach bug. "Can't keep anything down."
  2. Migraine. "Can't look at a screen."
  3. Food poisoning. Same as stomach bug, more specific.
  4. Family emergency. Brief, no detail.
  5. Sick child. Common and verifiable.

Second tier

  1. Mental health day. Increasingly accepted.
  2. Doctor / dentist appointment.
  3. Childcare fell through.
  4. Bad reaction to medication.
  5. Sleep deprivation. "Was up all night sick."

Logistics

  1. Plumber / electrician for a service window.
  2. Power outage.
  3. Car trouble — tow, dead battery.
  4. Burst pipe / flood at home.
  5. Voting / jury duty / civic obligation.

Delivery tips

  • Early notice. Before your absence is noticed.
  • Brief. "Stomach bug, taking the day. Will be on Slack if urgent."
  • Don't over-explain. Long stories sound rehearsed.
  • Match your team's norm. Slack, email, or call — pick what's standard.

What kills credibility

  • Posting on social media during the "sick" day
  • Same excuse twice in a month
  • Excuses requiring documents you don't have
  • Calling out the day before / after a holiday weekend

When excuses are bad strategy

  • You'd rather just be in a job you don't dread.
  • You need real time off.

Sorce auto-applies to 5M+ jobs. 40 free swipes/day. Maybe the answer isn't a better excuse.

For more: bulletproof excuses to get out of work, reasons to call out of work, excuses to call off work.