A public hearing on wage theft in Somerville will be held Tuesday by the Board of Aldermen. Nearly 200 people signed a petition requesting the hearing, which was submitted to City Hall last month. Somerville Mayor Joseph Curtatone has since proposed a city ordinance change, which calls for any business that violates state wage or overtime laws to be shut down. The petition was organized by Centro Presente, an immigrant workers’ rights advocacy group that previously helped a group of seven employees of One World Cuisine — which owns Diva Indian Bistro in Davis Square — file a lawsuit seeking $183,500 in alleged unpaid wages and overtime. Tuesday’s hearing will be held at 7 p.m. at City Hall.