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We figured out the best fortune 500 companies to work for in Illinois using data on salaries, company financial health, and employee diversity. You can also search for the best fortune 500 companies to work for in any other state or city.

Zippia score 4.8
Tenneco is a global manufacturing company, is pioneering global ideas for cleaner air, and smoother, quieter and safer transportation. They are one of the world's leading designers, manufacturers and distributors of Ride Performance and Clean Air products and technology solutions for diversified markets, including light vehicle, commercial truck, off-highway equipment and the aftermarket. They serve their customers from 92 manufacturing facilities and 15 engineering and technical centers around the world, delivering advanced technologies, quality products, powerful brands and outstanding engineering and manufacturing capabilities. Headquartered in Lake Forest, Illinois, their 32,000 employees around the world demonstrate the company's commitment to shareholder value, their customers' success, employee engagement and sustainability.
Zippia score 4.6
Grainger, Inc. is an American Fortune 500 industrial supply company founded in 1927 in Chicago.
Zippia score 4.5
Packaging Corporation of America (PCA) is the fourth largest producer of containerboard and corrugated packaging products in the United States. Our focus on a single line of business not only differentiates us from our major competitors, but also helps us achieve levels of operational excellence that are highly respected within the industry. A leader in integration, PCA converts approximately 83% of the containerboard it produces into finished corrugated containers for a broad base of both local and national accounts. With 2012 net sales at a record $2.8 billion and 8,600 employees, PCA produced 2.6 million tons of containerboard and shipped 34.7 billion square feet of corrugated products
Zippia score 4.7
Non-U.S. Developed Markets Specialty and Branded Generics Business comprises manufacturing of specialty and generic pharmaceuticals.
Zippia score 4.6
Kelly Services, Inc. (Kelly) is a global workforce solutions provider operating throughout the world. Kelly assigns professional and technical employees in the fields of education, legal, health care, and creative services. It has also developed a suite of solutions to help customers manage their workforce. Kelly offers outsourcing, consulting, recruitment, career transition and vendor management services. It operates in seven business segments: Americas Commercial, Americas Professional and Technical (Americas PT), EMEA Commercial, EMEA Professional and Technical (EMEA PT), APAC Commercial, APAC Professional and Technical (APAC PT) and Outsourcing and Consulting Group (OCG). Kelly's workforce solutions are provided to a diversified group of customers through offices in three regions: the Americas, Europe, the Middle East, and Africa (EMEA) and Asia Pacific. On November 16, 2011, it acquired Tradicao Planejamento e Tecnologia de Servicos S.A. and Tradicao Tecnologia e Servicos Ltda.
Zippia score 4.5
Good health is vital to all of them , and finding sustainable solutions to the most pressing health care challenges of their world cannot wait. That's why they at Pfizer are committed to applying science and their global resources to improve health and well-being at every stage of life. They strive to provide access to safe, effective and affordable medicines and related health care services to the people who need them. They have a leading portfolio of products and medicines that support wellness and prevention, as well as treatment and cures for diseases across a broad range of therapeutic areas; and they have an industry-leading pipeline of promising new products that have the potential to challenge some of the most feared diseases of their time, like Alzheimer's disease and cancer.
Zippia score 4.5
ITW's products and solutions are at work all over the world, in deep-sea oil rigs, aerospace technology, bridges and wind turbines, healthcare, the spaces in which they live and work, the cars they drive, and the mobile devices they rely on. They are never, whether they know it or not, more than a few steps from an innovative ITW solution. The foundation of their company is the ITW Business Model, a unique and differentiated set of core capabilities and business practices that comprises three key elements: ITW's 80/20 business process, customer-back innovation and a decentralized entrepreneurial culture.
| Rank | Company | Zippia score |
|---|---|---|
| 1 | Tenneco | |
| 2 | Grainger | |
| 3 | Packaging Corporation of America |