A purchasing agent obtains purchased items by forwarding orders to suppliers, verifies receipt of items, resolves shipments in error with suppliers, and authorizes payment for purchases by forwarding receiving documentation.

A General Operations Manager's role is to implement processes and practices across an organization.

Industrial engineers prevent waste and inefficiency in production processes. They will design efficient systems that integrate workers, information, machines, energy, and materials to make products or provide services.

Transportation/logistics managers oversee warehouse, inventory control, material handling, customer service, transportation, and planning workers. They hire, train and evaluate employees. Managers prepare worker schedules and ensure warehousing and distribution workers follow safety rules.