How to Read Employee Payroll History with Unified's

Unified's HR API offers a method for accurately reading employee payroll history by utilizing documented payroll artifacts such as payslips and timeshifts, rather than relying on inferred or current-state compensation data. This approach addresses common issues in HR systems where 'pay history' is often implied and not explicitly recorded, which complicates payroll analytics and historical reconstruction. By fetching employees and joining payslips as point-in-time payroll snapshots, and optionally incorporating timeshifts for time-based compensation, users can aggregate payroll data client-side without vendor-specific integrations or assumptions. This method ensures correctness and scalability across different HR systems while avoiding the storage or mutation of employee records, supported by Unified's API which uses standard HTTP status codes for error handling and offers a 30-day free trial for new users.