Terceira previously served as the co-ordinator for Carpenters’ Local 1030, where he was responsible for representing the interests of skilled trades professionals and advocating for fair working conditions across Toronto. He also served as a Carpenters’ Regional Council executive board member and regional manager for the Carpenters’ Regional Council Local 1030.
From 1997 to 2007, Terceira served as a business representative in the concrete and drain sector for LIUNA Local 183. In 2007, he started in the role of business manager, negotiating over 26 collective agreements, as well as negotiating a benefits package for all undocumented workers in the province of Ontario for LIUNA Local 183. He also negotiated a full benefits package for retirees equal to that of the active members.
Terceira is also recognized for his philanthropic efforts and has been an advocate for Renos for Heroes, a charity that renovates homes to improve accessibility for injured military veterans. Terceira has led annual walkathons, raising over $1 million for the cause. As vice-president of business development and labour relations for Atria and its group of companies, Terceira will oversee workforce development strategies and labour negotiations.