Human resources departments face several challenges in the 21st century. They must serve a multigenerational workforce with different expectations and loyalties. Employees are also changing jobs more frequently, staying for only 3-5 years. HR must adapt to this changing environment by focusing on employee skills, abilities, and knowledge rather than traditional administrative tasks. They must also recruit a diverse workforce using online tools and partnerships while helping employees maintain a work-life balance, especially as jobs demand increased flexibility and autonomy.