What are the key areas on which every Human Resource Manager works most of the times?

Compensation & Benefits

The total rewards area of human resource management is sometimes referred to as compensation and benefits. This aspect of the field focuses on both direct compensation, which refers to wages and bonuses paid to employees, and indirect compensation, which refers to benefits made available to members of the workforce. Payroll processing falls under this function, as does benefits administration. It involves making sure that employees are paid in a manner that is compliant with the Fair Labor Standards Act, that payroll taxes are withheld and filed properly, and that benefits enrollment procedures are handled properly.
Human Resource Development

The employee development aspect of human resource management is sometimes referred to as the training or workforce development function. It involves identifying areas where skill development is needed, either in terms of specific skills or knowledge that a particular individual needs to master or organization-wide training needs. Training needs may be soft skills, like customer service, communication and leadership development, as well as technical skills such as computer skills and equipment operation capabilities. In some cases, HR professionals responsible for employee development provide instruction themselves, while in others they bring in trainers, send employees out to classes or source online or computer-based training programs that can be used.
Employee Welfare

The employee relations function of human resource management is focused on maintaining positive relations between the organization and members of its workforce. Duties that typically fall under the scope of this function involve morale management, rewards and recognition programs, performance appraisal procedures, verifying compliance with policies and procedures, complaint investigation and labor relations. Employee relations professionals typically work closely with members of the management team, lending support and assistance as needed.
Safety

Every company must provide a safe working environment for employees. The safety function ensures that the organization is compliant with Occupational Safety and Health Act requirements, as well as any other important safety-related tasks. It includes important functions like developing and enforcing safety policies and procedures, conducting safety audits, overseeing safety meetings and training, dealing with occupational injuries and illnesses, and handling accident reporting requirements.

HR managers have to perform various serious duties and responsibilities like - They have to work for HR Team effectiveness for HR efficiency,...Deliver Business expectations to attain HR Credibility,...to frame and implement clearly understandable policies,...Nurture and develop HR team to meet business requirement,...execute manpower planning,...manpower hiring as per the demand,...plan and execute suitable interventions to keep the employees motivated,.