Onsite Payroll and Benefits Specialist

MMI Engineered Solutions is seeking a detail-oriented and highly organized Payroll & Benefits Specialist to administer accurate and timely payroll while managing employee benefits programs and supporting HR operations. This role is a key part of the HR team and works closely with both HR and Finance to ensure compliance, data accuracy, and a positive employee experience.

This position is ideal for someone who thrives in a fast-paced environment, enjoys working with data and systems, and is comfortable assisting employees and training managers on payroll and benefits processes.

Key Responsibilities

Payroll Administration

• Process weekly and biweekly payroll with a goal of 100% accuracy.

• Review timesheets and time clock reports to ensure accurate hours reporting.

• Administer employee garnishments, including Income Withholding Orders (eIWO), ensuring proper withholding and remittance.

• Audit payroll to ensure accurate benefit deductions, local tax withholding, and wage reporting.

• Troubleshoot time clock and payroll system issues, including support for remote facilities.

• Process hires, terminations, and employee changes in the payroll/HRIS system.

Benefits Administration

• Assist employees with benefit enrollment and questions.

• Participate in New Employee Orientation and Open Enrollment.

• Follow up on required documentation (EOI forms, 401(k) distribution forms, etc.).

• Prepare Short-Term and Long-Term Disability claims in coordination with FMLA and ADA.

• Process unemployment claims.

• Educate employees on pay, paystubs, overtime, deductions, and how to maximize their benefits.

HRIS, Reporting & HR Support

• Maintain HRIS data integrity and perform regular HR data audits.

• Lead HRIS system improvements and integration projects.

• Track and analyze trends in turnover, absenteeism, and workforce data.

• Assist with compensation analysis and salary/benefits surveys.

• Support payroll, benefits, and 401(k) audits.

• Field payroll and benefits-related questions from employees.

• Assist with onboarding and ensure completion of new hire documentation and I-9s.

• Support broader HR initiatives including employee relations support and wellness programs.

Qualifications

• Bachelor's degree in Human Resources or equivalent experience required.

• Previous payroll and benefits experience in an organization with 100+ employees.

• iSolved HCM experience a plus.

• FPC or CPP certification preferred.

• Strong Microsoft Office skills, especially Excel (pivot tables, formulas, macros).

• SharePoint experience a plus.

• Strong analytical skills and attention to detail.

• Ability to multitask, prioritize, and meet deadlines.

• Must be able to work on-site five days per week (40 hours) and adjust schedule occasionally to support off shifts.

• Proven ability to maintain confidentiality and communicate effectively with employees and managers.

What We're Looking For

• Ability to work in a fast-paced environment and manage multiple deadlines.

• Highly organized with strong attention to detail and follow-through.

• Comfortable assisting employees daily with payroll and benefits questions.

• Ability to train and support managers on HR, payroll, and benefits processes.

• Strong problem-solving skills and ability to handle confidential information.

• Someone who is approachable, responsive, and service-oriented.

Work Environment & Expectations:

• Working in an office environment with fluorescent lighting in a cubical 

• Occasionally on the production floor - Must adhere to all company safety policies and use required personal protective equipment (PPE) while on the production floor.

Why Work at MMI?

• A rich Benefits Package including Medical, Dental, Vision, Long and Short-Term Disability (Company Paid), a robust Wellness Program, tuition reimbursement, and a 401(k) Retirement Plan with matching.

• Paid Time Off

• Up to Ten (10) paid holidays (including one Diversity Holiday and Wellness Day)

• Perfect Attendance and Employee Referral Bonus opportunities (up to $200 per referral)

• Opportunities for growth and job training, for energetic, career-minded individuals.

• Located in Saline, MI just minutes from Planet Fitness, Emagine Saline, Briarwood Mall and hundreds of local businesses!

Who We Are:
MMI is a plastic injection molding and engineering solutions provider headquartered in Saline, Michigan, with offices in Troy, Warren, and Monterrey, Mexico. We specialize in delivering engineering solutions for advanced composites and engineered resins across diverse industries.

Our mission is simple: Deliver a Quality Product, On Time, at a Competitive Price.
We are committed to fostering an inclusive, welcoming workplace where innovation thrives and collaboration is at the heart of everything we do.

MMI Engineered Solutions is an equal opportunity employer