Systems, program products, and methods of human resources planning and development are provided. An embodiment of a system includes a server in communication with a communication network and having a human resource database associated therewith, a plurality of client computers, and a computer medium associated with the server and having program code responsive to preselected manning assumptions to process human resource information from the human resource database for predicting a future number of employees desired within the organization for a preselected period of time, program code responsive to preselected employment development assumptions to process the human resource information for assigning a plurality of employment development activities to participating employees in the organization, and program code responsive to information generated by the employment development plan to revise the human resources manning plan and responsive to revisions in the human resources manning plan to revise the employment development plan.