What is Business Process Re-engineering (BPR)? How do you motivate the employees to gladly accept the new process?

Business Process Reengineering (BPR) is the practice of rethinking and redesigning the way work is done to better support an organization's mission and reduce costs. Reengineering starts with a high-level assessment of the organization's mission, strategic goals, and customer needs.

The Employee can be motivated by

Intrinsic : which is as Self-generated, internal motivation: which gives a  sense of satisfaction and achievement  when we spend time on activities that reflect and drives us, activities that we enjoy. 

If we have an inner drive to learn new things, we may feel highly motivated at work completing tasks that require us to develop our knowledge, skills and experience.  Working on and completing these tasks can give us feelings of deep inner satisfaction, particularly in contrast to tasks that offer no opportunity for growth.

Extrinsic :External motivators are given to us by others, such as a salary, bonuses and other incentives, security, praise, recognition, promotion or even punishment or withdrawal of privileges.

Extrinsic motivators tend to be determined at the organisational level and outside the control of individual leaders and managers.  They also have more of a short-term impact on motivation: if they are withdrawn, motivation rapidly falls away.