After graduation, Hoggan continued to work in the PR field focusing on publicly sensitive information.

[6] He has also served as a trustee of the Dalai Lama Center for Peace and Education and is the former chair of Climate Project Canada.

[4] Hoggan is the author of three books, including the 2009 works Do the Right Thing: PR Tips for a Skeptical Public[7] and Climate Cover-Up: The Crusade to Deny Global Warming,[8] as well as his 2016 work I'm Right and You’re an Idiot: The Toxic State of Public Discourse and How to Clean it Up.

[10] In response to the book, David Suzuki has stated that the efforts of deniers described by Hoggan is "tantamount to an intergenerational crime while our politicians to whom we entrust the future are criminally negligent.

[2] Hoggan received a 2003 "Silver Anvil" award by the Public Relations Society of America.