How to Read Employee Payroll History with Unified's HR API

Unified's HR API provides a structured approach to reading and aggregating employee payroll history by utilizing documented payroll artifacts such as payslips and timeshifts, rather than relying on inferred compensation data. This method ensures accuracy and transparency in payroll analysis by avoiding the use of vendor-specific integrations, undocumented fields, or assumed compensation history. The API allows users to fetch employees and join them with payslips for pay-period payroll snapshots and, optionally, with timeshifts for time-based compensation. Users are responsible for aggregating the data client-side while handling currency and frequency explicitly, ensuring that the results are both reliable and scalable across different HR systems. This approach maintains data integrity by not storing or altering payroll data within Unified, and instead, it leverages standardized fields for point-in-time payroll snapshots and time-window compensation records.