This article discusses various performance management models in human resource management and explores their advantages and disadvantages. It covers general appraisal, 360-degree appraisal, technological performance appraisal, employee self-assessment, manager performance appraisal, and project evaluation review. The article also discusses theories of HR management, including scientific management theory, systems management theory, and contingency management theory. Additionally, it highlights important laws in human resource management, such as the Equality Act 2010, Workmen's Compensation Act, Employment Rights Act, and Contract Law.