The primary role of the Human Resources (HR) department is to ensure that that an organisation gains maximum strategic benefit from its staff and from its personnel management systems.HR managers supervise the administration of the employees of an organisation and also plan and manage its manpower requirements in order to ensure that it has the right number of employees with the appropriate skills. To do this successfully, HR managers are also in charge of setting up performance evaluation schemes which provide appraisals of employee efficiency and potential. Other critical responsibilities of an HR department include payroll management, recruitment, training and development, career management and conflict resolution. In many businesses today, HR also plays a key role in ensuring workforce diversity and the well-being of all members of staff.