Marathon Oil Corp. CEO Lee Tillman took home a $1.7 million bonus last year, in part because of the company’s expansion into the Texas and North Dakota shale formations. Meanwhile, Exxon Mobil Corp. executives saw higher payouts, thanks partly to the oil giant's drilling campaign in the Russian Arctic. That’s life in the energy business. As major companies amass greater amounts of oil, gas and coal, top executives are often rewarded with bonuses and incentive pay — and environmentalists say that’s a problem.
