Day & Zimmermann Ranked in Forbes’ List of America’s Largest Private Companies

PHILADELPHIA, PA  Day & Zimmermann, the century-old, family-owned provider of construction & engineering, staffing, and defense solutions for leading corporations and governments around the world, today announced it has earned a ranking of 188 on the Forbes America’s Largest Private Companies list.

Day & Zimmermann concluded the last fiscal year with an annual revenue of $2.4 billion and a workforce of over 42,000 employees. The 225 firms that made the Forbes annual list of the largest private companies in the U.S. collectively account for $1.57 trillion in revenue, and employ 4.7 million people, which is up from 4.5 million in 2016.

The Forbes largest private company list considers only firms with revenue greater than $2 billion. Forbes excludes foreign companies, companies that don’t pay income tax, mutually owned companies, cooperatives, companies with fewer than 100 employees, and companies that are more than 50 percent owned by another public, private or foreign company. They also exclude companies whose primary business is auto dealerships or real estate investment and/or management. The data sources used in the rankings consist of voluntary disclosures, SEC filings, and estimates from Forbes researchers and outside sources.

Founded in 1901, Day & Zimmermann is a family-owned company with a workforce of over 42,000 specializing in construction & engineering, staffing and defense solutions for leading corporations and governments around the world. Operating from more than 150 worldwide locations with 2.4 Billion USD in revenue, Day & Zimmermann is currently ranked as one of the largest private companies in the U.S. by Forbes. Headquartered in Philadelphia, PA, our first work was to develop "Betterment Reports" that helped modernize American factories. Today, we are still in the business of betterment—maintaining the nation's power infrastructure, protecting American freedoms and driving technological advancements around the world. We do what we say.®


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