# How is Paychex using AI agents for payroll service calls?

> Paychex uses a Sierra agent for transactional payroll calls such as entering hours. Sierra reports early results of 95% positive client satisfaction and 93% positive customer effort scores.

- **Evidence grade:** B — Named organization with a quantified outcome, from the vendor or the organization's own announcement.
- **Organization:** Paychex (payroll and HR services provider)
- **Industry:** Professional Services — Payroll & HR services
- **Roles:** Customer Support
- **Tools:** Sierra AI agent (Sierra)
- **Status:** production · **Agent pattern:** voice-agent · **Autonomy:** 3/4
- **Last verified:** 2026-10-17

## Reported outcomes
- client satisfaction: 95% positive [1] (self-reported)
- customer effort score: 93% positive [1] (self-reported)

## How it works
1. Agent handles transactional payroll requests by phone.
2. Service reps focus on complex cases.

## Risks & compliance
- Wrong or hallucinated answers to customers; needs guardrails and handoff
- Vendor-published results; not independently audited
- Regulated financial disclosures and identity verification

## Sources
1. Sierra, "Paychex and Sierra" (undated; accessed 2026-10-17) <https://sierra.ai/customers/paychex>
   > "The early results from those using the agent validated the approach: 95% positive client satisfaction scores, 93% positive customer effort scores"

Canonical: https://agentcasefile.com/cases/paychex-sierra-payroll-voice-agent/ · License: CC BY 4.0 (summary) · Source: Agent Casefile