HR outsourcing involves contracting specialized third party providers to handle certain HR activities like recruitment, benefits management, and training. This allows companies to focus on core business goals while gaining expertise, flexibility, risk-sharing, and potential cost savings. However, outsourcing impacts in-house HR professionals and employees. It also carries risks if provider quality declines or switching costs rise. Therefore businesses should outsource carefully and keep some strategic HR functions like planning and appraisal in-house.