Underwriters Laboratories Inc.

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Northbrook Division - Corporate Headquarters

The center of UL activity is its corporate home, which is located in suburban Northbrook, 25 miles north of downtown Chicago. Consisting of 715,000 square feet of office and laboratory space, UL's Northbrook facility is specially designed and equipped for conducting safety investigations on thousands of electrical, chemical and mechanical products and systems. More than 1,600 engineers, technicians and administrative staff work in Northbrook to serve clients and fulfill UL's safety mission throughout the world.

A trained and experienced staff, large and diverse laboratory facilities, and a unique dedication to public safety are the elements that give UL's Northbrook home the versatility necessary to handle a wide variety of investigations. UL evaluates innovative products such as ozone-protecting, chlorofluorocarbon recycling equipment and life-saving devices for the visually and hearing impaired, as well as established products such as electric toasters and irons. In addition to providing thorough safety evaluations, UL publishes vital information for use by consumers, manufacturers, code authorities and others who play a role in the U.S. safety system.

The Northbrook facility is home to all of UL's corporate departments, including Corporate Communications, Follow-up Services, Human Resources, Information Systems, Office Services, Publications and Standards, as well as a highly competent and diversified engineering operation.

UL also operates comprehensive testing laboratories in Melville, N.Y.; Santa Clara, Calif.; and Research Triangle Park, N.C. Follow-Up Services programs operate throughout the United States and in more than 70 countries worldwide. UL's two wholly owned affiliates, UL International Ltd. and UL International Services Ltd., operate testing laboratories in Hong Kong and Taiwan, respectively.