Human resource accounting aims to measure the value and costs of an organization's employees. It provides important information for management decision making. There are several methods for calculating the value of human resources, such as historical cost, replacement cost, opportunity cost, and capitalizing salary costs. An important related concept is human resource inventory, which catalogs each employee's skills, experience, potential, and suitability for different roles to aid in succession planning and internal hiring. Maintaining management inventory cards, position replacement forms, and management manpower replacement charts allows organizations to effectively track their human capital resources.