U.S. Senator Bernie Sanders and a group of Democratic lawmakers are pushing to raise taxes for companies that pay their chief executives at least 50 times more than their typical worker’s salary, saying the bill was needed to limit corporate greed.

The union-backed proposal, which could impact some of the nation’s biggest companies and largest employers, would also require Treasury Department guidelines to prevent companies from avoiding the tax by using contractors rather than employees, the senators said in a statement on Monday.

The bill could generate $150 billion in U.S. revenue over 10 years, while companies could avoid the tax hike by raising workers’ pay and reducing CEO salaries, they added.

[The real way to put an end to this is to greatly restrict mergers, acquisitions, and consolidation in industries. This will never raise revenues, though, because these corporations will re-domicile overseas instead. Still, this is one of the issues that drives populism on both sides of the political aisle, although it’s usually more of an opportunity for demagogues rather than real policies to address the wealth and power consolidation. — Ed]