Top companies in Chicago

McDonald’s is the world’s leading global foodservice retailer with over 37,000 locations in over 100 countries. More than 90% of McDonald’s restaurants worldwide are owned and operated by independent local business men and women. McDonald's & our franchisees employ 1.9 million people worldwide.We serve the world some of its favorite foods - World Famous Fries, Big Mac, Quarter Pounder, Chicken McNuggets and Egg McMuffin. To learn more about the company, please visit www.aboutmcdonalds.com.

• Post-IPO debt
• 299.3k employees
• Founded 1955

Abbott is a global healthcare leader that helps people live more fully at all stages of life. Our portfolio of life-changing technologies spans the spectrum of healthcare, with leading businesses and products in diagnostics, medical devices, nutritional and branded generic medicines. Our 122,000 colleagues serve people in more than 160 countries. Connect with us at www.abbott.com, on Facebook at www.facebook.com/Abbott and www.facebook.com/AbbottCareers, on Instagram @AbbottGlobal, and on X @AbbottNews.We invite you to explore opportunities at Abbott, to see if your talents and career aspirations may fit with our openings. An equal opportunity employer, Abbott welcomes and encourages diversity in our workforce.Terms of Use: https://www.abbott.com/social-media-terms-of-use.htmlPrivacy Policy: https://abbo.tt/privacy

• Post-IPO debt
• 150.9k employees

JLL (Jones Lang LaSalle Incorporated) is a leading global commercial real estate services and investment management company. Founded in 1783, JLL operates in more than 80 countries with 113,000+ professionals and $23.4 billion in annual revenue. Ranked Fortune 500 #175.In a market where timing separates leaders from followers, you need a partner who helps you move with precision. That's what JLL delivers—with clarity powered by unmatched data, confidence from a firm built to last and certainty backed by execution that performs across the real estate lifecycle.What services does JLL provide?Property Management, Leasing Advisory, Capital Markets, Workplace Strategy, Project and Development Services, Design, Sustainability Solutions, and Real Estate TechnologyWhat makes JLL unique?• Intelligence that illuminates the path forward: Our research teams publish 2,000+ reports annually across 60+ markets. JLL Falcon – our proprietary AI platform for commercial real estate – combines decades of expertise, the industry's richest data and generative AI to surface patterns before they become consensus, putting you ahead of the curve.• Relationships built to last: With 240+ years of history, we're chosen by 95% of top global investors and half of the Fortune 500, with a 99% retention rate. You get a partner who's navigated every market cycle and knows what's coming next.• Execution at scale: With 113,000+ professionals across 80+ countries, we deliver coordinated solutions with consistent quality wherever you operate. You get one partner who sees the complete picture and executes globally.Recognition• Fortune's World's Most Admired Companies — 10 years • World's Most Ethical Companies (Ethisphere) — 18 years• EPA Energy Star Sustained Excellence Award — 14 yearsHeadquartered in Chicago, Illinois | NYSE: JLLJLL combines data intelligence with commercial real estate expertise so you can See a Brighter Way.

• 105.9k employees
• Founded 2013

Hyatt Hotels Corporation, headquartered in Chicago, is a leading global hospitality company guided by its purpose – to care for people so they can be their best. As of December 31, 2025, the Company's portfolio included more than 1,500 hotels and all-inclusive properties in 83 countries across six continents. The Company's offering includes brands including Park Hyatt®, Alila®, Miraval®, Impression by Secrets, The Unbound Collection by Hyatt®, Andaz®, Thompson Hotels®, The Standard®, Dream® Hotels, The StandardX®, Breathless Resorts & Spas®, JdV by Hyatt®, Bunkhouse® Hotels, and Me and All Hotels; Zoëtry® Wellness & Spa Resorts, Hyatt Ziva®, Hyatt Zilara®, Secrets® Resorts & Spas, Dreams® Resorts & Spas, Hyatt Vivid® Hotels & Resorts, Bahia Principle Hotels & Resorts, Alua Hotels & Resorts®, and Sunscape® Resorts & Spas, Grand Hyatt®, Hyatt Regency®, Destination by Hyatt®, Hyatt Centric®, Hyatt Vacation Club®, and Hyatt®, Caption by Hyatt®, Unscripted by Hyatt, Hyatt Place®, Hyatt House®, Hyatt Studios®, Hyatt Select, and UrCove. Subsidiaries of the Company operate the World of Hyatt® loyalty program, ALG Vacations®, Mr & Mrs Smith, Unlimited Vacation Club®, Amstar® DMC destination management services, and Trisept Solutions® technology services. For more information, please visit www.hyatt.com.This account provides information about Hyatt Hotels Corporation, its subsidiaries or affiliates and/or hotels operating under a Hyatt-affiliated brand. Terms like “Hyatt,” “we,” “our,” “us,” and similar terms are used for convenience and should not be understood as precise designations of any particular entity. The account name and certain terms like “employees” are used by this site but may not be accurate. Individuals may identify themselves as working or having worked at Hyatt or a Hyatt hotel, but please note that self-identification should not be treated as confirmation of employment, past or present, by Hyatt or any particular entity or hotel.

• Post-IPO debt
• 85k employees
• Founded 1957

This is the story of airline that leads the industry from ground to clouds. Our global cast of over 100,000+ hero characters are each on a journey to be a force for good for our customers, the planet and each other. Come be part of this story.

• 76k employees
• Founded 1926