When times are good in financial markets, bankers get colossal bonuses. When things go badly? Bankers still live well off the fat. Many can cash in and check out, leaving taxpayers to pay for the mess. Banker bonuses were cast as one of the root causes of the 2008 global financial crisis, the heart of an incentive system that rewarded greed and excessive risk. Years later, bonus payments for bankers remain a prickly topic for banks and politicians. As a European Union law limits payouts, there’s still a debate about whether regulators should interfere with how much bankers earn.