To keep abreast of the latest developments in the field of human resources management, they actively purchase books on this subject by responding to offers via direct mail, response ads in print media, fax marketing, telemarketing, or email marketing. Most of them play key roles in formulating corporate human resources strategy--setting up the right organizational structure, defining the functions, developing the organization in line with the overall business strategy, managing across cultures, etc. Some of them are consultants, trainors, lecturers, and resource persons engaged by companies to launch and administer specific human resources development programs. Some are specialists on labor issues, wage and benefit administration, etc. Some of them work for head-hunting companies. Others are managers in functional areas outside human resources management.