Senior Payroll Specialist

Company: Oparc
Location: Claremont
Posted on: April 5, 2026

Job Description:

OPARC believes that all individuals deserve the human right to be valued members of society regardless of their intelligence or physical capabilities. OPARC exists to make training, employment, and social opportunities available and to be the champion for thousands of people with disabilities in Southern California. We are looking for an individual with at least 3 years of experience specifically with ADP payroll systems and advanced proficiency with Excel. This position does require driving and will need a valid California Driver license. Title: Senior Payroll Specialist General Statement of Function: The Senior Payroll Specialist will be responsible for processing payroll, ensuring compliance with state and federal regulations, and generating and analyzing ADP payroll reports. This role requires expertise in ADP with a strong understanding of payroll best practices, tax laws, and reporting functions within ADP Workforce Now. Essential Functions : Key Responsibilities Review payroll inputs from various internal sources daily, to ensure accurate bi-weekly payroll processing. Process and administer payrolls for all employees, ensuring accuracy, timeliness, and compliance. Find any payroll data that is not in compliance and develop strategies to educate employees and timecard supervisors in noncompliance issues and ensure that they follow the labor law. Generate and analyze ADP payroll reports to ensure compliance, accuracy, and business insights. Ensure compliance with federal, state, and local payroll regulations, including tax withholdings, wage garnishments, and deductions. Work closely with HR and Finance to ensure payroll accuracy and resolve discrepancies. Oversee and resolve complex payroll discrepancies and irregularities including managing out-of-cycle pay runs and retroactive pay adjustments. Manage payroll audits, find issues, and with the assistance of supervisor implement corrective measures as needed. Works with Program Managers, supervisor, and employees, being a senior point of contact, to ensure that payroll queries and payroll problems are resolved promptly, delivering excellent customer service standards. Completes and returns, payroll data to other third-party organizations like State departments, courts, and Child Support Agency. Review compliance with ACA (Affordable Care Act) and work closely with HR on noncompliance issues. Assist the CFO in managing 403b Retirement Plan, i.e. sending bi-weekly deferrals, preparing documentation for auditors, verifying and complete plan surveys. Annually file EEO-1 reports for each OPARC location. Participate in every ADP meeting on the implementation of ADP Comprehensive Services Verify year-end payroll processing, including W-2s for all ADP payroll branches. Maintain confidentiality and security of employee payroll information. Maintain the organization in compliance with the federal, state, and local labor law by keeping educated and informed of any changes in payroll regulations. Actively seeking payroll information and interpreting new laws by doing extensive research. Facilitate audits by providing records and documentation to auditors. Other duties as needed. Qualifications 5 years of payroll processing experience, preferably in a senior or lead role. Experience with ADP payroll software, including running ADP reports and data analysis. Strong understanding of payroll laws, tax regulations, and compliance requirements. Advanced Excel skills (pivot tables, VLOOKUP, data analysis) preferred. Excellent diligence and critical thinking skills. Effective communication and customer service skills. Ability to manage sensitive information with discretion and confidentiality. Preferred Certifications : Certified Payroll Professional (CPP) or Fundamental Payroll Certification (FPC) is a plus. Other Requirements : Able to lift up to 25 lbs. by self; standing, walking, sitting, pushing, bending, and pulling are required; squatting and repetitive motion may be necessary. Location: OPARC - Montclair, California Reports To: Chief Financial Officer Schedule: Monday through Friday, 8am – 4:30pm with a ½ uninterrupted lunch. Compensation: $70,000 - $80,000 (Non-Exempt)

Keywords: Oparc, Fullerton , Senior Payroll Specialist, Accounting, Auditing , Claremont, California