A human resources manager, or HR Supervisor, is responsible for coordinating all administrative activities related to an organization's personnel. Their duties include developing recruitment strategies, implementing systems for managing staff benefits, payroll and behavior and onboarding new employees. To us, an HR Manager is the go-to person for all employee-related issues. This means that your HR Manager duties will involve managing activities such as job design, recruitment, employee relations, performance management, training & development and talent management.