Greg was first elected as the MLA for Yorkton in the 2007 provincial election and was re-elected in 2011. Born in Regina, Greg has lived in Yorkton for most of his life, and has always been involved in his community. Prior to being elected, Greg owned and operated Ottenbreit Waste Systems, a private environmental and waste disposal business.
Greg has been married to his high school sweetheart, Leone, for over 26 years, and has two daughters, Katelin and Rayanne. In 1998, the couple started Brayden Ottenbreit Close Cuts for Cancer, an event that encourages volunteers to shave their head to raise money for cancer research and local initiatives. The charity, which has raised almost $700,000, is named in honour of their son Brayden who lost his battle with cancer in 2000 at age 5.
Greg and Leone received the Saskatchewan Centennial Medal in 2005 for their community involvement and volunteerism. Greg was recognized in 2012 with the Hal Rogers Fellow Award, the highest honour presented by the Kinsmen of Canada.
Greg has served as the Legislative Secretary to the Minister of Social Services, Community Based Organizations initiative and as Legislative Secretary to the Minister of Environment, Recycling. In June 2010, he was appointed as Legislative Secretary to the Premier for Vulnerable Youth. Greg has served as Chair of the caucus' standing policy committee on human services and the Chair of the legislature's Standing Committee on Human Services. He has served as Deputy Government Whip and Government Whip. On September 24, 2014, he was appointed as the Minister Responsible for Rural and Remote Health.