First Reply Time vs Resolution Time: What to Report to Leadership
First reply time (or first response time) and resolution time are both speed metrics, but they answer different questions. First reply = “How fast did we acknowledge?” Resolution = “How long until we closed the ticket?” Leadership (and your weekly review) should see both. This post explains the difference and what to report.
Definitions (short)
- First reply time — Time from ticket creation to the first meaningful agent reply. Sets expectations and is often the main SLA metric. See first response time in the glossary.
- Resolution time — Time from ticket creation to close (or solve). Reflects total time to resolution. See resolution time in the glossary.
Both matter: first reply sets expectations and reduces anxiety; resolution reflects the full customer journey. For how to report each in Zendesk, see first reply time in Zendesk and Zendesk resolution time report.
Why both matter (and when they diverge)
- First reply fast, resolution slow — You’re acknowledging quickly but taking a long time to close. May be complexity, process, or capacity on the “resolution” side.
- First reply slow, resolution OK — You’re slow to acknowledge but then close at a reasonable pace. May be routing, triage, or coverage at “first reply.”
- Both trending up — Capacity or volume issue; check backlog and ticket volume. See support metrics dashboard and support ops metrics.
So: report both to leadership and in your weekly review. Use the same time basis (business hours if you don’t work 24/7) and the same aggregation (e.g. median for first reply, average for resolution) everywhere.
What to show in weekly reviews
Include in your support dashboard template and support ops metrics agenda:
- First reply time — Median (or average) this period vs last; any segment slow? Link to first reply time in Zendesk.
- Resolution time — Average (or median) this period vs last; any segment slow? Link to Zendesk resolution time report.
Then: volume, backlog, reopens, SLA. Same order every week. For the full agenda, see Weekly Support Ops Review.
Common confusion: business hours and “first” vs “full” resolution
- Business hours — Use business hours for both first reply and resolution if you don’t work 24/7 so the numbers are interpretable. Don’t mix calendar and business hours in the same report.
- First vs full resolution — “First resolution” = time to first solve; “full resolution” = time to final close (after any reopens). For SLA and “time to close,” use full resolution. See First vs full resolution time.