Automatic Data Processing Inc. (ADP) is a global business outsourcing services provider headquartered in Roseland, N.J. ADP is one of the largest payroll outsourcing providers in the world, and was an early adopter of a cloud computing operating model. According to executives, the vendor cuts paychecks for one in six Americans.
The reverse of fixed costs are variable costs, which vary with changes in the activity level of a business. Examples of variable costs are direct materials, piece rate labor, and commissions.
Definition of Variable Cost. Variable costs are expenses that fluctuate proportionally with the quantity of output. Variable costs are directly tied to the activities of producing volume, which rises when these activities increase and falls when activities decrease.his cost per unit is the variable cost of each variable unit produced, or in other words the additional cost incurred for the production of each spark plug. For example, if the business produced 1,000 more units, it would expect to incur additional production costs of $180.