McCarron & CohenMcCarron & Cohen

Ken Cohen, VP of public and government affairs at ExxonMobil, will retire at the end of the year, capping a 38-year career at the energy giant.

Suzanne McCarron, GM of PA and GA for the company and president of the ExxonMobil Foundation, is expected to succeed Cohen.

Cohen, who reaches the mandatory retirement age of 65 in January, joined the company's law department in 1977 and took his current role in November 1999. He recently led the response against New York Attorney General Eric Schneiderman's probe of the company's climate change policies.

McCarron joined ExxonMobil's PA operation in 1998 and has managed communications and corporate PA for the company.