WU's in-house development, which (mostly) uses SAP functionality and provides a user interface (including access rights) for WU employees. The Bach Employee Self Services are implemented in the programming language Python, with the web framework Zope and an Oracle database.

The Workflow for mobile working (request framework, approve or endorse, request or approve individual days) is mapped.

WU employees have the option to make their pay slip and travel expense statement available via the web (after completing an appropriate application).

Application used to request leave for WU employees, approved by the respective supervisors, and imported into SAP by the HR department.

The WU email/phone directory on the Internet generated from SAP data.