Personnel department / HR

Before 1901, worker management in American factories was handled informally by foremen and supervisors who hired, fired, and disciplined at their own discretion. Abuses were systemic. When workers at National Cash Register walked off the job, company president John H. Patterson recognized that the absence of any structured process for hearing complaints or managing workforce relations left the company perpetually vulnerable. He created a personnel department charged with handling grievances, discharges, safety, and training supervisors on workplace practices.

The model spread quickly. Ford Motor Company established a Sociological Department in 1914, sending investigators into workers' homes to inspect their living conditions as a prerequisite for receiving the company's five-dollar daily wage. By 1920, an estimated twenty percent of American companies had personnel departments. World War I accelerated the trend, as the military's need for systematic selection and training methods created expertise that migrated into the private sector after the war.

The renaming from "personnel" to "human resources" occurred during the 1960s and 1970s, reflecting a philosophical shift. Personnel had been administrative, focused on compliance, record-keeping, and dispute resolution. Human resources signaled that employees were assets requiring strategic management. The rebranding coincided with the passage of the Civil Rights Act of 1964, which expanded the department's compliance responsibilities to include anti-discrimination practices. By the early twenty-first century, the Society for Human Resource Management counted over three hundred thousand members globally.