Backlog support: definition, management, and reduction

Nicolas Pellissier
Glossary
- 8 min reading
Published on
January 7, 2026

On Monday morning, you open your dashboard and discover 150 tickets waiting for you. Your backlog has exploded over the weekend. How did you get here, and more importantly, how do you get out of it?

In this guide, discover what support backlog is, why it accumulates, and how to manage it effectively.

Backlog support: definition

The support backlog refers to all tickets or customer requests awaiting processing at a given moment. It is the "stock" of unresolved requests.

A zero backlog is unrealistic (there are always tickets in progress), but a backlog that is constantly growing is a sign of an imbalance between incoming volume and processing capacity.

How to measure the backlog

The gross number of tickets

The simplest indicator: how many tickets are currently open?

The age of the backlog

More revealing: what is the average age of pending tickets? A backlog of 50 tickets created two hours ago is not a problem. Fifty tickets older than seven days is a red alert.

The backlog by priority

20 P4 tickets pending is acceptable. 20 P1 tickets is a crisis.

Evolution over time

Is the backlog increasing or decreasing day by day? The trend is just as important as the absolute figure.

Why the backlog is piling up

1. Volume peaks

Product launches, incidents, promotions, seasonality... Certain events generate peaks that the team cannot absorb.

2. Understaffing

The team is simply too small for the incoming volume. It's a structural problem.

3. Unresolved recurring issues

An uncorrected bug, missing information on the website... These problems generate avoidable tickets.

4. Processing time too long

If each ticket takes too long to process, capacity automatically decreases.

5. "Blocked" tickets

Waiting for the customer, a third party, an internal team... These tickets stagnate and inflate the backlog.

6. Poor prioritization

Agents handle the most recent or easiest tickets, leaving older ones to pile up.

The impact of a high backlog

About customers

  • Longer waiting times
  • Growing frustration
  • Follow-ups that create even more tickets
  • Churn risk

About the team

  • Stress and feeling overwhelmed
  • Demotivation in the face of a mountain of tickets
  • Declining quality of responses
  • Turnover that exacerbates the problem

About SLAs

A high backlog = guaranteed SLA breaches. Commitments can no longer be met.

How to reduce the backlog

Short-term actions (putting out the fire)

1. Prioritize ruthlessly

Identify critical tickets (SLA approaching, VIP customer, blocking issue) and handle them first.

2. Call in reinforcements

Agents from other teams, managers returning to the field, temporary workers, external service providers, etc.

3. Perform batch processing

Group similar tickets together and process them in batches. An agent who specializes in a particular type of request is more efficient.

4. Communicate proactively

Inform customers of the unusual delay. An informed wait is less frustrating.

5. Close whatever can be closed

Tickets without customer response for X days, obsolete requests, duplicates... Clean up your system.

Medium-term actions (preventing recurrence)

1. Automate recurring requests

Identify frequently asked questions and automate the answers.

Klark automates the processing of simple requests, reducing the workload and preventing backlogs from accumulating.

2. Improve self-service

The more customers find things on their own, the fewer tickets come in.

3. Address the root causes

A bug that generates 50 tickets per day? The real solution is to fix the bug, not to process the tickets.

4. Size the team correctly

Analyze the volume and adjust staffing levels. Chronic understaffing is not sustainable.

5. Optimize processing time

Training, better tools, response templates, easier access to information... Every minute saved counts.

Managing the backlog on a daily basis

The morning ritual

Start each day with a review of the backlog:

  • How many tickets?
  • Which ones are the oldest?
  • Are there any emergencies?
  • What is the current capacity?

The real-time dashboard

A display visible to everyone helps keep the backlog under control. When it turns red, everyone sees it.

Automatic alerts

Notification when the backlog exceeds a threshold, when a ticket becomes overdue, when the SLA is approaching...

The weekly review

Trend analysis, pattern identification, adjustments for the following week.

Backlog and other metrics

The backlog interacts with other KPIs:

KPIRelationship with the backlog
First response timeHigh backlog = degraded FRT
Resolution timeHigh backlog = delayed resolution
CSATHigh backlog = declining satisfaction
SLA rateHigh backlog = SLAs not met

Mistakes to avoid

Mistake #1: Ignoring the backlog

"We'll catch up later" is rarely true. The backlog that accumulates becomes increasingly difficult to clear.

Mistake #2: Handling recent tickets first

FIFO (First In, First Out) should be the basic rule. The oldest tickets first (except in emergencies).

Mistake #3: Closing without resolving

Closing tickets to lower the counter without actually processing them = angry customers who come back.

Mistake #4: Hiring reactively

Recruitment takes time. Anticipate rather than react when the backlog explodes.

Mistake #5: Not analyzing the causes

Clearing the backlog without understanding why it formed guarantees that it will return.

Frequently Asked Questions

What is an acceptable backlog?

It depends on your volume and your SLAs. A backlog of 2-4 hours of work is generally healthy. Anything beyond a day is cause for concern.

Should there be a zero backlog target?

No, that's unrealistic and can lead to sloppy work. Aim for a stable and manageable backlog.

How to manage the backlog on Monday morning?

Plan ahead: keep capacity available at the end of the week, set up weekend on-call shifts, or communicate longer lead times for requests made on Friday evenings.

Is the backlog the same for all channels?

No. Email tolerates backlogs better than chat. Prioritize according to the expectations of each channel.

Conclusion

The support backlog is a barometer of the health of your customer service department. A controlled backlog means a properly sized team, efficient processes, and satisfied customers.

The keys to mastering the backlog:

  • Measure it daily (number AND age)
  • Prioritize old and critical tickets
  • Automate to reduce incoming volume
  • Address the root causes of recurring requests
  • Size the team by anticipating, not reacting

Is your backlog exploding? Discover how Klark can help you reduce it.

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