This document discusses cost accounting and overhead. Overhead refers to business costs that are not directly related to producing goods or services, such as rent, utilities, insurance, and administration costs. Apportionment of overheads involves distributing indirect costs across multiple cost centers using an equitable basis. Primary apportionment distributes overhead expenses that benefit several departments, while secondary apportionment reapportions service department overhead to production departments. Both primary and secondary apportionment use bases like machine hours or labor hours to allocate costs, with the goal of absorbing all overhead costs into the products.