Human resource planning (HRP) involves forecasting future human resource needs and developing plans to meet those needs. The HRP process includes forecasting demand and supply of human resources, analyzing gaps between the two, and formulating HR plans to address gaps. Key aspects of the HRP process include using forecasting techniques like trend analysis and workload analysis to estimate future demand, and tools like skills inventories and replacement charts to assess internal and external labor supply. The goal of HRP is to ensure the organization has the right number and type of employees to execute business strategies.