This article discusses the functions of HRM in organizations, focusing on recruitment and selection, employee performance management, training and development, employee guidance and direction, compensation and benefits, and controlling. It also explores the challenges faced in these functions, such as attracting top talent, delivering consistent training, changing culture and language, lack of effective leadership, and dealing with change. Solutions to overcome these challenges are also provided. The case study on Unilever highlights the specific challenges faced by the company in HRM functions.