The document discusses the evolution of human resource management (HRM) through 8 stages:
1) In the pre-industrial era, the Industrial Revolution led to the development of the factory system and a need for worker supervision but no formal HRM.
2) The emergence of modern corporations in the late 19th century resulted in the separation of employment from business ownership, requiring the modern practice of HRM.
3) In the early 20th century, scientific management theories and industrial psychology emerged to study worker productivity, leading to the establishment of personnel departments.
4) World War I further increased the need for systematic HRM practices to manage labor shortages and turnover. This marked the emergence of H