get https://api.bamboohr.com/api/gateway.php//v1/employees/changed/tables/
This API is merely an optimization to avoid downloading all table data for all employees. When you use this API you will provide a timestamp and the results will be limited to just the employees that have changed since the time you provided. This API operates on an employee-last-changed-timestamp, which means that a change in ANY field in the employee record will cause ALL of that employees table rows to show up via this API.