Which specialized jobs became important in large mass-production companies?

In large mass-production companies, the division of labor and the increasing complexity of operations necessitated the development of specialized roles across various levels of the organization.

Managerial and Professional Roles

The growth of manufacturing concerns created a need for a hierarchy of supervisors and managers to oversee production systems. Additionally, companies began employing specialists in areas such as:1
* Accounting
* Engineering
* Research and development
* Human resources
* Information technology
* Distribution, marketing, and sales1

Technical and Operational Roles

The reliance on sophisticated technology and complex production systems increased the demand for:
* Industrial engineers: Professionals who focus on methods, standards, and the organization of process technology to maintain high productivity.2
* Skilled technicians: Individuals capable of operating, maintaining, and supervising automated machinery and computer-controlled equipment.3
* Assembly-line operators: While early mass production relied on unskilled or semiskilled workers performing repetitive tasks, modern systems increasingly require workers who can manage automated tools and participate in quality control efforts.13