This document discusses various types of incentive schemes and performance-based pay plans used in human resource management. It defines incentives as variable awards granted to employees based on their performance. Several types of incentive plans are described, including straight piece-work systems, standard hour systems, and Halsey, Rowan, and Barth variable sharing plans. The document also outlines prerequisites for effective incentive systems, such as scientific work measurement and worker cooperation. Overall, the summary provides an overview of common incentive structures and considerations for implementing performance-based compensation.