“I guess that employers who see this...

“I guess that employers who see this and are not engaged in testing will say, ‘So we’re like most people. Why should we invest money in this and create all this hassle?’ ”

--Clyde Summers, a law professor at the University of Pennsylvania, on a U.S. Labor Department study that reported what some experts said were unexpectedly low rates of drug testing and drug use in the American workplace.

“My concern is that companies will misinterpret the statistics. They might say, ‘Because the numbers are so low, we don’t have a problem.’ ”

--Lee Dogoloff, executive director of the American Council for Drug Education.