One after another, the big names in global finance were summoned by Chinese officialdom.

On the agenda: pay, specifically, with officials telling Credit Suisse Group, Goldman Sachs Group and UBS Group to report details on how they compensate their top bankers.

Don’t reward your top people too lavishly, Chinese regulators warned the banks this year in meetings in Shanghai and Beijing, or you might run afoul of the Communist Party, according to people familiar with the matter.