Simons began working at La Maison Simons in 1986. He and his brother Richard took over the business in 1996, becoming the fifth generation of the Simons family to run the store. Under Peter and Richard Simons, La Maison Simons expanded outside of Quebec City for the first time, opening stores in
Sherbrooke and
Montreal in 1999,
Saint-Bruno-de-Montarville in 2001,
Laval in 2002 and
Anjou, Quebec in August 2013. Simons opened the 9th store in
Gatineau in 2015. At the time, annual sales were reported as higher than $C 300 million. Upon a visit to
Paris, Simons discovered one of the seven existing Fontaine de Tourny pieces in an antique shop. The fountain was once located in the Allées de Tourny in
Bordeaux. Simons had the fountain restored on
Île d’Orléans. He donated it to Quebec City as a gift for its 400th anniversary, and had it installed in front of the
National Assembly of Quebec in July 2007. ==Honours==