 After leaving the legislature following the 1951 election, Wismer moved to Ottawa, Ontario where he served as president of the Ottawa Trades and Labour Council, president of Mooretown Housing Inc. and as public relations director and then research director of the Trades and Labour Congress of Canada.Upon the creation of the Canadian Labour Congress in 1956, he became the new body's legislative director.Wismer was expelled by the Ottawa Labour Council and resigned from his position with the CLC due to a spending and conflict of interest scandal related to Wismer's role at Mooretown Housing, a labour council owned housing development.