The document discusses human resource supply forecasting and management. It explains that human resource supply forecasting estimates the availability of human resources to meet demand. Supply comes from internal sources like transfers and promotions or external sources like new recruitment which depends on factors like education levels and economic growth. The document also discusses skills inventories and management inventories which track employee skills and assess managers. Finally, it outlines ways to anticipate and address changes in personnel like recruiting externally, encouraging delayed retirement, or transferring employees.