Payroll Assistant - Part Time

September 30, 2026

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Job Overview: Payroll Assistant (Oak Park)

The Opportunity

URGENT HIRE: Payroll Assistant (Part-Time)
Hiring: Costco
Worksite: Oak Park Area
Start: Immediate start available.
Work in Oak Park, IL.
Join Costco and grow your skills.

Compensation

Est. Earnings: $22-$27/hr ($24.50/hr)
Perks: Fast-paced environment.
Great for supplemental income.

Payroll Assistant - Part Time

About Costco

We operate over 800 warehouse clubs globally, supplying bulk goods directly to millions of active members every single week. Our organization consistently promotes from within, ensuring hourly staff can advance into corporate management roles. When you embark on a career in part time payroll assistant with Costco, you are joining you are joining a supportive team that values work-life balance and rewards dedication with clear internal promotions.

Job Summary

Join our payroll team on a part-time schedule designed to fit around your classes or second job. You will handle weekly wage calculations and benefit updates while building a long-term internal career path. You will serve as Part-Time, delivering the signature Detail-oriented that sets Costco apart in the payroll administration.

Comprehensive Responsibilities

Process Weekly Timesheets: Review 250 employee timecards weekly using ADP Enterprise.
Update Direct Deposits: Input 40 banking changes monthly into SAP software accurately.
Audit Wage Records: Verify zero discrepancies across 500 employee tax withholding files.
Resolve Payroll Inquiries: Answer 30 weekly staff questions via ticketing system.

Industry-Leading Benefits & Salary

We invest in our part-time employees with reliable perks and scheduling support.

Salary: $21.50–$26.00 per hour
Flexible Shifts: Choose morning or evening blocks fitting your personal commitments.
Retirement Plan: Contribute to a 401(k) program with company match options.
Free Membership: Receive a complimentary annual warehouse club membership card.

Requirements & Qualifications

Minimum 1 year of hands-on payroll processing experience
Proficiency in Microsoft Excel including vlookups and pivot tables
High school diploma or equivalent educational qualification
Ability to work 20 scheduled hours per week on-site

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