This report discusses the current trends, internal and external factors, relevant theories, and change management models that influence HR practices in Thomas Cook Group (TCG). It explores the strategic human resource management (SHRM) policies and their impact on achieving long-term objectives and sustainability. The report also evaluates the appropriate change management model that supports the HR strategy of TCG and explains how HR outcomes can be measured and monitored. Additionally, it discusses how HR management and development can support sustainable performance by achieving objectives.