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Admin Assistant

CRH Public

Elgin, IL · Posted October 24, 2026

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About the job

Job ID: 529734

Non-Exempt

Oldcastle, a CRH company, is reinventing what's possible in building solutions. We are the leading provider of innovative outdoor living products and utility infrastructure solutions for the water, energy, and communications markets throughout North America. We're a trusted and strategic partner to engineers, contractors, distributors, specifiers, retailers, and homeowners alike as the manufacturer of precast concrete, polymer concrete, and plastic infrastructure products. Our portfolio of brands includes Oldcastle APG, Oldcastle Infrastructure, Belgard® hardscape, Echelon® Masonry, RDI® railing, Catalyst™ Fence Solutions, Sakrete® packaged concrete, Amerimix® mortar, Pebble Technology International® pool finishes, and Techniseal® sands and sealant technologies.

Oldcastle Infrastructure - Built For Life from Oldcastle Infrastructure on Vimeo .

Job Summary

The Plant Administrative Assistant is responsible for handling a variety of administrative tasks at Oldcastle, Elgin. The individual in this position plays a crucial role in the manufacturing process by accurately inputting and maintaining various types of data related to production and other aspects of the manufacturing operation, as well as customer and employee relations. This role requires a high level of attention to detail, organizational skills, and the ability to work efficiently in a fast-paced manufacturing environment.

*SAP experience highly preferred

Job Responsibilities

Document Management:

Create, edit, and maintain Excel spreadsheets for data tracking and reporting

Prepare and format reports for internal and external use

Scheduling & Coordination:

Organize and schedule meetings, appointments, tours, and employee engagement events

Coordinate logistics for company activities, including venue booking and catering

Administrative Support:

Handle incoming calls, emails, meeting invites, and correspondence professionally

Greet and monitor visitors

Maintain office supplies inventory

Assist with filing, record-keeping, and document archiving

Data & Reporting:

Collect and compile data for monthly, quarterly, and annual reports

Ensure accuracy and confidentiality of all information handled

Employee Engagement:

Support management in planning team-building activities and recognition programs

Communicate event details and manage RSVPs

Other Responsibilities:

Adherence to Standards: Follow established data entry protocols, security measures, and confidentiality guidelines to ensure data integrity and protect sensitive information

Continuous Improvement: Contribute to the identification and implementation of best practices to enhance accuracy and efficiency in operations.

Multitasking: Handle multiple tasks simultaneously and prioritize workload to meet deadlines and production schedules

Maintain regular and punctual attendance

Comply with all company policies and procedures

Other duties as assigned

Support inventory and cycle counts

Reconcile shipping records

Some safety task support

Job Requirements

High school diploma or equivalent; education or training in data entry or related field is a plus

Experience in using computer software, including data entry applications, spreadsheets, and databases (e.g., Microsoft Office, Excel, PowerPoint and Teams)

Strong attention to detail and accuracy

Excellent organizational and multitasking abilities

Effective communication skills and the ability to collaborate with cross-functional teams

Commitment to maintaining data confidentiality and security

Passion to support, create, and improve processes

Bilingual English/Spanish not required, but can be beneficial

Compensation

The hourly rate is $25-$31/hr

401(k) plan​ / group retirement savings program​

Short-term and long-term disability benefits​​

Life insurance​

Health, dental, and vision insurance​

Paid time off ​

Paid holidays

What CRH Offers You

Highly competitive base pay

Comprehensive medical, dental and disability benefits programs

Group retirement savings program

Health and wellness programs

An inclusive culture that values opportunity for growth, development, and internal promotion

About CRH

CRH has a long and proud heritage. We are a collection of hundreds of family businesses, regional companies and large enterprises that together form the CRH family. CRH operates in a decentralized, diversified structure that allows you to work in a small company environment while having the career opportunities of a large international organization.

If you’re up for a rewarding challenge, we invite you to take the first step and apply today! Once you click apply now, you will be brought to our official employment application. Please complete your online profile and it will be sent to the hiring manager. Our system allows you to view and track your status 24 hours a day. Thank you for your interest!

Oldcastle Infrastructure, a CRH Company, is an Affirmative Action and Equal Opportunity Employer.

EOE/Vet/Disability

CRH is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, status as a protected veteran or any other characteristic protected under applicable federal, state, or local law.

AI tools may be used in certain stages of the employment lifecycle, such as candidate review; however, all final employment decisions will be made by a person.