What is On-call?
On-call, told as a story about the one person carrying the pager this week.
The ride stops, and nobody knows until morning.Nobody had been set to answer, even at night.
Why is this hard?Without an owner, everyone assumes it's someone else's job.
One person carries the pager this week.Day or night, whoever's on call sees it first.
When the week ends, it passes to the next person.The calendar shows at a glance whose week it is.
Too many alerts, and even the real one gets missed.That's why deciding what truly deserves an alert matters.
On-call means one person carries the pager for the week — first to see it, day or night, rotating week by week, and escalating to the next person if there's no answer.
The rotation of people who get paged when something breaks. Too many alerts cause alert fatigue, which can bury the real emergency — so teams choose carefully what triggers a page and leave handover notes at every switch.
When grown-ups say it
- On-call
- Whoever's holding the pager this week. First to be paged when something breaks.
- Rotation schedule
- The calendar that rotates week by week. Shows at a glance whose week it is.
- Escalation
- Passing it to the next person when there's no answer. It's fine if one person can't always answer.
- Alert fatigue
- Being worn out by too many alerts. It makes the real emergency get missed. → how many rings mean a real emergency
- Handover notes
- The notes passed along at the switch. Tells the next person what happened last week.
- On-call compensation
- What's paid back for carrying the pager. Often extra pay or time off in return.
- Paging
- The device that rings to call someone. Covers texts, calls, and app alerts alike.
- Incident commander
- Whoever takes charge when it's a big incident. On-call hands it off if it grows bigger. → whoever picks up the baton