Administrative Assistant

County-Materials-Family-of-Companies; Romeoville (IL); On-site; USD 38,000 - 48,000; Full time

Benefits offered by this job

Health, dental and vision insurance

401(k) match

Paid holidays

Paid Time Off

Employee Assistance Program

Wellness program

Job summary

County Materials Family of Companies is seeking an Administrative Assistant to join County Prestress in Romeoville, Illinois. The role focuses on receptionist duties, data entry, accounts payable support, and benefits inquiries, requiring strong organizational skills and ability to multitask in a fast-paced office.

The candidate should have a High School diploma or equivalent and 1–2 years of administrative experience, with proficiency in Microsoft Office and excellent communication skills.

Qualifications

• High School diploma or equivalent.
• 1–2 years of administrative or related experience (preferred).
• Proficiency in Microsoft Office (Word, Excel, Outlook).
• Strong written and verbal communication skills.
• Highly organized, proactive, and able to handle multiple priorities.
• Self-motivated team player with a positive attitude and strong attention to detail.
• Ability to handle confidential information responsibly.
• Regular interaction with employees and visitors.
• Standard hours: Monday- Friday 7:30 AM – 4:30 PM.
• Overtime may be required as needed.

Responsibilities

• Serve as the primary receptionist, answering phones, greeting visitors, and providing general clerical support.
• Provide administrative assistance with employee benefits inquiries, directing questions to appropriate resources.
• Review and verify employee timecards for accuracy at the location level.
• Perform data entry, maintain spreadsheets, and generate reports as needed.
• Act as the accounts payable liaison for the location, supporting the accounting team with documentation and data entry.
• Maintain organized physical and digital filing systems and accurate records.
• Support overall office organization, upkeep, and administrative compliance.
• Perform other administrative duties as assigned.

Skills

Strong written and verbal communicatie

Highly organized

Attention to detail

Confidentiality handling

Education

High School diploma or equivalent

Tools

Microsoft Office

Job description

Posted Friday, August 7, 2026 at 5:00 AM

The County Materials Family of Companies manufactures and delivers concrete construction products to meet the demand for growing communities. Since 1946, we've relied on our talented and dedicated team members to provide reliable products with personalized service.

We’re hiring an Administrative Assistant to join County Prestress in Romeoville, Illinois.

Job Summary:

The Administrative Assistant is responsible for receptionist and general administrative duties, including answering phones, greeting visitors, timecard review, data entry, accounts payable assistance, and benefits support. This position requires strong organizational skills, confidentiality, attention to detail, and the ability to multitask in a fast ‑ paced office setting.

Job Duties & Responsibilities:

• Serve as the primary receptionist, answering phones, greeting visitors, and providing general clerical support
• Provide administrative assistance with employee benefits inquiries, directing questions to appropriate resources
• Review and verify employee timecards for accuracy at the location level
• Perform data entry, maintain spreadsheets, and generate reports as needed
• Act as the accounts payable liaison for the location, supporting the accounting team with documentation and data entry
• Maintain organized physical and digital filing systems and accurate records
• Support overall office organization, upkeep, and administrative compliance
• Perform other administrative duties as assigned

COUNTY Core Competencies:

The expected behaviors of all COUNTY team members that align with Our Values and Our Commitments:

• Integrity & Organizational Awareness
• Customer First Focus
• Results Driven Orientation
• Teamwork, Safety & Collaboration
• Problem Solving & Decision Making
• Creativity & Innovation

Job-Based Competencies:

• Attention to Detail & Time Management
• Communication Coordination
• Professional Service
• Meeting & Event Coordination
• Information & Data ManagementConfidentiality
• Critical Thinking & Motivation

Experience & Qualifications:

(Required or Preferred)

• High School diploma or equivalent
• 1–2 years of administrative or related experience (preferred)
• Proficiency in Microsoft Office (Word, Excel, Outlook)
• Strong written and verbal communication skills
• Solid basic math and data accuracy skills
• Highly organized, proactive, and able to handle multiple priorities
• Self ‑ motivated team player with a positive attitude and strong attention to detail
• Ability to handle confidential information responsibly
• Professional office ‑ based environment
• Regular interaction with employees and visitors
• Standard hours: Monday- Friday 7:30 AM – 4:30 PM
• Overtime may be required as needed

Physical & Work Expectations:

An individual in this position must be able to successfully perform the essential duties and responsibilities listed above. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions of this position.

• Frequent standing, walking, bending, reaching, or handling materials/equipment.
• Occasional climbing, kneeling, crawling, or lifting/moving up to 40 pounds.
• Ability to concentrate, follow detailed instructions, communicate effectively, and safely perform job duties.
• May require the operation of specific tools, equipment, or vehicles associated with the position.

The County Materials Family of Companies connects candidates with rewarding careers in concrete manufacturing, an industry that’s growing faster than most. We work alongside individuals to leverage their skills and align them with diverse job opportunities in production, transportation, safety, finance, human resources, information technology, marketing, risk management, and more.

Military service members and veterans are encouraged to apply.

Benefits Overview:

Central Processing Corporation is the payroll and benefit service of the County Materials Family of Companies.

• Health, dental and vision insurance
• Paid Short-term & Long-term disability
• 401(k) match
• 8 Paid holidays
• Paid Time Off
• Referral rewards program
• Wellness program with rewards
• Flexible Savings Options
• Employee Assistance Program
• Paid Life Insurance
• Safety focused: GUARD for Life
• Voluntary critical illness & accident insurance

County Materials Family of Companies is an EEO/Affirmative Action Employer ; all qualified applicants will receive consideration for employment without regard to any characteristic prohibited by federal, state and/or local laws.

We participate in E-Verify to confirm employment eligibility for all new hires.