By Vivian Giang, Melissa Stanger and Gus Lubin from The Business Insider. It's possible to love your job and get a good salary too: You just have to work for the right company. The first annual list of the best employers in America by PayScale and Business Insider evaluates companies by both pay and happiness. Companies in the 2012 Fortune 500 were ranked using PayScale's salary and survey database. Happiness represented 57 percent of the final score and was measured through questions about satisfaction, feelings of meaningfulness, stress, and schedule flexibility. Pay represented 43 percent of the final score and was measured by looking at median pay after five years and pay compared to industry peers.