Part time Payroll Specialist - HR Administrator

Aria Group; Oak Park (IL); On-site; USD 24,000 - 36,000; Part time

Job summary

Aria Group in Oak Park, IL is seeking a Part-Time Payroll Specialist / HR Administrator to manage payroll accuracy and support HR administration. You will process bi-monthly payroll, maintain records in HRIS, assist with benefits, onboarding/offboarding, and ensure compliance with payroll regulations, while protecting confidentiality in a collaborative HR team.

This role requires 3–5 years of payroll experience and an eye for detail, offering a part-time schedule in a professional design firm

Qualifications

• 3–5 years of payroll processing experience.
• ADP WorkforceNow experience required.
• Knowledge of payroll procedures, deductions, tax withholding, and applicable regulations.
• Experience supporting HR or employee benefits preferred.
• Strong Excel and Microsoft Office skills.
• Ability to handle confidential and sensitive information.
• Ability to work independently and meet payroll deadlines.

Responsibilities

• Process payroll on a bi-monthly basis with accuracy and timeliness.
• Review timesheets, hours worked, PTO, deductions, and tax withholdings.
• Resolve payroll discrepancies and respond to employee payroll questions.
• Maintain accurate payroll and employee records in HRIS/payroll systems.
• Ensure payroll practices comply with federal, state, and local requirements.
• Coordinate with Finance to record and reconcile payroll transactions.
• Prepare payroll reports and assist with benefit account reconciliations.
• Support benefits administration and onboarding/offboarding processes.

Skills

Payroll processing

Attention to detail

Organizational skills

Communication skills

Problem-solving

Confidentiality awareness

Independence

Education

High school diploma or equivalent

Associate’s degree in Accounting, Business, Human Resources, or related field

Tools

ADP WorkforceNow

Excel

Microsoft Office

Job description

Part-Time Payroll Specialist / HR Administrator

Aria Group | Oak Park, IL | Part-Time

Aria Group is looking for an experienced, detail-oriented Part-Time Payroll Specialist / HR Administrator to join our growing Human Resources team.

This is a hands-on role for someone who enjoys the accuracy and organization of payroll while also being comfortable supporting the day-to-day administrative needs of HR. The position will take primary responsibility for processing payroll and maintaining accurate payroll and employee records, while providing additional support related to benefits, HR systems, and general employee administration.

As Aria continues to grow, this role will help us maintain accurate, responsive, and efficient HR and payroll processes.

What You’ll Do

• Process payroll accurately and on time for all employees on a bi-monthly basis.
• Review timesheets, hours worked, PTO, deductions, garnishments, tax withholdings, and other payroll-related information.
• Research and resolve payroll discrepancies and respond to employee payroll questions.
• Maintain accurate payroll and employee records within our HRIS/payroll systems.
• Ensure payroll practices comply with applicable federal, state, and local requirements.
• Coordinate with our Finance team to ensure payroll transactions are properly recorded and reconciled.
• Prepare payroll reports and assist with payroll and benefit account reconciliations.
• Support employee benefit administration, including enrollments, changes, and payroll deductions.
• Assist with employee onboarding, offboarding, and other HR administrative processes.
• Maintain employee information and documentation with a high degree of accuracy and confidentiality.
• Provide general administrative support to the HR team as needed.

What We’re Looking For

• 3–5 years of payroll processing experience.
• Experience working with ADP WorkforceNow is required.
• Working knowledge of payroll procedures, deductions, tax withholding, and applicable payroll regulations.
• Previous experience supporting HR or employee benefits is preferred.
• Strong Excel and Microsoft Office skills.
• Exceptional attention to detail and organizational skills.
• Ability to handle confidential and sensitive employee information appropriately.
• Strong communication and problem-solving skills.
• Ability to work independently, prioritize responsibilities, and meet payroll deadlines.
• High school diploma or equivalent required; Associate’s degree in Accounting, Business, Human Resources, or a related field preferred.

About the Position

This is a part-time position based in our Oak Park office. We are looking for someone who can establish a consistent weekly schedule and be available around payroll processing deadlines. The position is well suited for an experienced payroll professional looking for a part-time schedule while remaining actively involved in both payroll and HR operations.

About Aria Group

Aria Group is an architecture and design firm specializing in hospitality, restaurant, and entertainment environments. Our success is built around our people, our clients, and a collaborative culture that has allowed us to grow while maintaining the relationships and accessibility of a closely connected firm.

Aria Group Architects, Inc. is an equal opportunity employer. We are committed to creating an inclusive workplace and providing equal employment opportunities to all qualified applicants.