What is an HR audit and the main types to know

Executive overview

Many HR teams only audit when problems surface — by then, damage is already done. Regular internal audits keep your organisation compliant, your records clean, and your team ready for any external review.

Six distinct audit types cover different risk areas. Each targets a specific failure mode.

Proactive auditing is the only auditing that actually prevents problems.

Why HR audits matter

• Maintain compliance with local, state, and federal employment laws
• Prevent fraud and surface financial discrepancies early
• Keep records current and practices defensible
• Identify weak areas before an external auditor does

The six types of HR audit

1. Compliance audit — checks for misclassified contractors, incorrect exempt/non-exempt status, non-compliant hiring and termination practices, NDA violations, OSHA breaches, and FLSA wage violations
2. Recruitment and retention audit — uses metrics like time to hire, turnover rate, and cost per hire to standardise and improve hiring processes
3. Compensation audit — benchmarks pay against industry and region to ensure offers stay competitive
4. Performance and training audit — confirms the organisation is fully utilising workforce capabilities
5. Financial and tax audit — requires all financial records in order; a CPA review can catch issues before the IRS does
6. Security audit — includes software audits (e.g. SOC 2) and data security certifications to identify system vulnerabilities

External audits

• Can be triggered by IRS discrepancies, business partner returns, or random selection
• Also conducted by insurance companies, CPAs, and tax agencies
• Always consult a tax professional if selected for an IRS audit
• Internal audit discipline is the best preparation for any external audit