The job market is finally looking up for college students. This year, employers expect to hire 11 percent more new college graduates than in 2015. More than four in ten employers described the job market as "very good" or better for this crop of graduates. Yet most employers struggle to integrate young hires into the workplace. The difference between the working environment of a college student and an entry-level employee is enormous. This disconnect can be costly. Unhappy workers tend to be unproductive and are more likely to leave. That forces companies to spend more on recruiting -- and harms their reputations.