The department inside a business that is in charge of managing its workforce is known as human resource management, or HRM. The development of HRM dates back to the early 1900s, when keeping records and making sure labor rules were followed were the key priorities. In order to better align human resources with the aims and objectives of the company, HRM's function has developed throughout time to become more strategic and proactive. There are various eras in the development of HRM, and they are all distinguished by distinct methods of managing the workforce. These epochs encompass the pre-industrial, industrial, and contemporary periods, as well as the eras of personnel management, human relations, and strategic human resource management.A lack of formal HRM practices characterized the pre-industrial revolution era, and workers were often treated as commodities. During the industrial revolution, the focus of the evolution of HRM was on maximizing productivity through scientific management and mass production techniques. The emergence of personnel management marked a shift towards more formalized HRM practices, and the human relations era emphasized the importance of employee motivation and job satisfaction. The rise of strategic human resource management saw a focus on aligning HRM with the organization’s strategy and goals.