A new ruling by the U.S. Department of Labor may change how businesses small and large may classify interns. For many years, the DOL maintained a six-part test to determine whether an individual working at a for-profit company could be classified as an unpaid, nonemployee intern. To bring on an unpaid intern, an employer had to meet all six qualifiers. In practice, however, the all-or-nothing requirements were detrimental to employers…