The subject mater herein relates to human resources data processing and, more particularly, to separation of employee data for different applications, such as personnel administration applications. Various embodiments provide systems, software, and methods that maintain a first set of employee data in an employee object, wherein the first set of employee data is valid across one or more other objects, and executing a process of a business object requiring at least a portion of the first set of employee data. In some embodiments, the business object obtains the portion of the first set of employee data from the employee object and maintains a second set of employee data that is not valid across all other objects.