Being on-call is one of the most discussed responsibilities of a Site Reliability Engineer (SRE) role. While some engineers consider it one of the most challenging parts of SRE, it is not necessarily the worst aspect. The experience largely depends on how an organization manages its systems, monitoring practices, alerting strategy, and on-call culture. On-call is a core responsibility of SRE because it ensures production systems remain reliable and incidents are handled quickly.
Why On-Call Can Be Challenging
The biggest challenge with on-call is the uncertainty and responsibility of responding to production incidents at any time. SREs may need to investigate outages, troubleshoot issues, and restore services during nights, weekends, or holidays.
Common difficulties include:
- Alert fatigue – Too many unnecessary alerts can make it difficult to identify real problems.
- Unexpected interruptions – Being available during personal time can affect work-life balance.
- High-pressure situations – Critical incidents require quick decisions and effective troubleshooting.
- Lack of documentation – Missing runbooks or unclear ownership can make incident resolution harder.
Many SRE discussions highlight that the problem is often not the incident response itself, but poor alert quality, unclear responsibilities, and unhealthy on-call processes.
Benefits of Being On-Call
Although challenging, on-call also provides valuable learning opportunities. It helps SREs:
- Understand real production environments
- Improve troubleshooting skills
- Identify system weaknesses
- Build automation to prevent repeated failures
- Improve reliability engineering practices
Handling incidents allows engineers to understand how systems behave under real-world conditions and make improvements that increase stability.
How Organizations Can Improve On-Call Experience
A healthy on-call process should include:
- Proper rotation schedules to distribute responsibility
- Actionable alerts instead of unnecessary notifications
- Clear escalation procedures
- Updated documentation and runbooks
- Automation for repetitive operational tasks
- Blameless post-incident reviews
Google's SRE practices emphasize that effective on-call management requires balancing reliability needs with sustainable workloads for engineers.
Conclusion
Being on-call is not the worst part of SRE; rather, it is an essential part of maintaining reliable systems. The real challenge comes from poorly designed processes, excessive alerts, and lack of automation. When organizations create a strong reliability culture, on-call becomes an opportunity for learning, ownership, and continuous improvement.
A successful SRE team does not try to eliminate on-call completely but works toward making it predictable, fair, and efficient through better monitoring, automation, and engineering practices.