Human Resources serve as the beating heart of modern management as they carry out the functions and tasks reinforce its position in the organizational structure of the organization, so there is no successful organization without human resources management. Organization of the 21st century and to consider their human resources as the most expensive assets, not just the elements of production, carefully chosen and trained constantly and put her effective incentives and provide a good environment to work and develop a sound evaluation systems. The critical difference between the 21st century and the organization of the 20th century is the "Human Resources", for this, dear reader, we will discuss in this book is the role of skilled and motivating human resources in the 21st century organizations.