Human Resources (HR) Manager

We are looking for an experienced Human Resources Manager to provide on-site support for a dynamic, high-volume workforce in Waltham, Massachusetts. This Long-term Contract position is ideal for someone who thrives in a highly interactive environment and can build strong partnerships with employees and operational leaders. The role centers on employee relations, daily HR operations, and practical guidance that helps maintain compliance, consistency, and a positive workplace experience.Responsibilities:• Lead employee relations matters from initial review through resolution, including workplace concerns, attendance issues, performance discussions, corrective actions, and separations.• Advise supervisors and department leaders on coaching approaches, policy application, performance conversations, and strategies to improve employee retention.• Administer benefits-related processes by responding to employee inquiries, supporting enrollment activity, and assisting with qualifying life event changes and open enrollment periods.• Oversee onboarding and orientation activities to create a smooth and consistent experience for new employees joining the organization.• Support programs that strengthen engagement, recognition, workplace culture, and overall employee satisfaction.• Maintain daily HR operations by processing employee status updates, managing leave-related documentation, organizing records, and helping ensure policy compliance across the workforce.• Use the organization’s HRIS platform for onboarding tasks, personnel updates, reporting, benefits support, time-off tracking, and other core HR transactions.• Work closely with operational leadership to deliver timely, practical HR guidance across multiple locations and business needs.