Robust Human Resource Management Department

The two questions to be answered are the following. Each question responsible is to be 4-5 pages long with 4 peer reviews scholarly journals used for each question including the books Public personnel management by Klingner, D.E., Nalbandian, J., & Llorens, J and

Human Resource Management for Public & Nonprofit Organizations, Pynes, Joan
which will make 6 references per questions which are below.

1. Why is it so important for an organization to have a robust Human Resource Management Department?
2. What are the challenges of Human Resources Management in the 21st Century.