44 employees have rated Clean Energy Fuels Chief Executive Officer Andrew J. Littlefair on Glassdoor.com. Andrew J. Littlefair has an approval rating of 44% among the company's employees. This puts Andrew J. Littlefair in the bottom 10% of approval ratings compared to other CEOs of publicly-traded companies. 59.0% of employees surveyed would recommend working at Clean Energy Fuels to a friend.