Payroll Administrator

We are looking for an experienced Payroll Administrator to oversee accurate and timely payroll operations for a construction-focused workforce in Tukwila, Washington. This role supports both field and office employees and requires strong attention to detail across multi-state processing, compliance, and employee lifecycle administration. The ideal candidate brings a solid command of union payroll, tax filings, and payroll systems while helping strengthen day-to-day processes within the function.

Responsibilities:

Administer weekly payroll for construction employees in both field and office settings using Spectrum Coordinate payroll activities across multiple states, ensuring earnings, deductions, and jurisdictional requirements are handled correctly. Manage union payroll obligations, including reporting, audit support, and adherence to applicable labor agreement requirements. Prepare and submit payroll tax payments and filings on a weekly, quarterly, and annual basis. Lead year-end payroll activities, including the accurate issuance of W-2 and 1095-C forms. Oversee employee onboarding and separation tasks to maintain correct payroll setup, records, and final pay processing. Administer benefit enrollments and removals to keep employee deductions and coverage aligned with status changes. Work closely with superintendents and project managers to gather, review, and verify weekly time records from the field. Identify opportunities to improve payroll and onboarding workflows, including supporting system review, data cleanup, and process enhancements. Provide dependable support within the payroll function and contribute to broader payroll coverage as business needs expand. At least 3 years of payroll administration experience, preferably in a construction or similarly complex workforce environment. Hands-on experience processing full-cycle payroll for employee populations ranging from approximately 100 to 500 employees. Demonstrated knowledge of multi-state payroll practices, including applicable tax withholding and filing requirements. Experience administering union payroll and supporting related reporting, compliance, and audit activities. Proficiency with Spectrum payroll systems. Strong understanding of payroll taxes, year-end reporting, and standard payroll compliance obligations. Ability to manage employee onboarding, offboarding, and benefits-related payroll changes with accuracy and timeliness. Strong communication and organizational skills with the ability to coordinate effectively with operational leaders and internal stakeholders Robert Half is the world's first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles. Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app and get 1-tap apply, notifications of AI-matched jobs, and much more. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information. © 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking "Apply Now," you're agreeing to Robert Half's Terms of Use and Privacy Notice .