Mr. Jaya,
The scope of Human Resources is very vast. It is very difficult to define the functions of HR. Right from recruitment to the separation of employees, it covers various processes. Between the date of joining and the date of separation, an employee undergoes training and development, welfare initiatives, industrial relations, and above all, compensation through wages and salary administration.
In many companies, there are several HR managers specializing in different areas. There are managers for compensation and compliance who oversee wages, salary administration, and compliance with PF, labor laws, ESI, and other regulations. There are also HR managers dedicated to training and development, industrial relations, and welfare and safety measures for employees.
There are numerous books available on this subject that you can refer to, or you can update your knowledge daily by visiting Citehr.
Satish B