This document discusses the key challenges facing human resource management (HRM) in a changing environment. It identifies three main levels of challenges: environmental challenges from forces outside the organization like rapid change, political/legal factors, and technology; organizational challenges internal to the firm like competitive positioning, strategy, and unions; and individual challenges relating to specific employees like matching people to jobs, motivation, and job insecurity. The document emphasizes that addressing these challenges requires proactive HRM strategies around areas such as training, succession planning, compensation, and empowering employees.