Dave Ulrich changed Human Resources. He described completely new HR Model. He introduced several roles, which HR has to act. The HR Business Partner is the key role in his concept. The HR Business Partner is the front office role of HR and the HR Business Partner has to understand the business he or she supports. The HRBP has to understand to all HR processes and has to be able to negotiate the win-win consensus with internal clients. What are the most common roles and responsibilities of the HR business partner? How should you implement the Dave Ulrich's HR Model in your organization?