A year after an embarrassing trading blowup led to millions of dollars being docked from Jamie Dimon's paycheck, the chairman and chief executive of JPMorgan Chase is getting a raise.

JPMorgan's board voted this week to increase Mr. Dimon's annual compensation for 2013, hashing out the pay package after a series of meetings that turned heated at times, according to several executives briefed on the matter. The raise—the details were not made public on Thursday—follows a move by the board last year to slash Mr. Dimon's compensation by half, to $11.5 million.