Aon Corp. said it has extended its contract with President and CEO Greg Case through 2030.

Case’s contract was previously set to end on April 1, 2028.

Case has led the brokerage, among the world’s largest, since he took over for Patrick Ryan in April 2005. Case came over from consulting firm McKinsey & Co., where he was head of the global insurance and financial services practice.

He has been named by the Harvard Business Review as one of the top 100 best performing CEOs in the world.

According to a filing with the U.S. Securities and Exchange Commission, Case’s annual base salary will increase to $1.75 million, and he will continue to be eligible for a bonus not less than 250% of base salary.

The contract includes two-year non-compete and non-solicitation provisions no matter the reason for termination.