There’s a new title in the C-suite: chief ESG officer. While top executives with “ESG” in their title are new and not yet widespread, this role is an opportunity that companies may consider as they face increasing pressure to address environmental, social, and governance (ESG) issues; companies like C.H. Robinson, Royal Caribbean, and Verizon have recently appointed chief ESG officers. But what does a chief ESG officer do? And when should a company have one?