Chesapeake Energy Corporation has moved up 14 spots on FORTUNE Magazine's "100 Best Companies to Work for" number 18. Last year, the company ranked number 32. The magazine noted Chesapeake's high-paying career opportunities and employee perks and benefits as reasons for the natural gas and oil producer's strong showing on the annual list. In 2011, Chesapeake added new benefits for its employees, including a state-of-the-art, 63,000-square-foot child development facility in Oklahoma City, two full-time chaplains available to all employees and a comprehensive pregnancy wellness program for expectant mothers. The full list and related stories will appear in the February 6th issue of FORTUNE. You can get a look now on the magazine's website.