June 6, 2013 1:58 pm Contractor Not Required to Show Work Proficiency L&I Commissioner Carlton Williams says code does not require a demolition contractor to show any proficiency or history of work prior to getting clearance to do a job. US & World Videos 0:50 Pat's Steaks set to reopen and add new items to their classic menu 1:56 10-year-old boy killed, another boy and teen driver injured in Wilmington crash 1:58 Pro-Palestinian protest at Penn's campus continues to grow despite warnings to end the encampment 0:24 2 juvenile pedestrians injured and taken to the hospital after Del. crash 1:35 Stretch of Kensington Avenue to close Wednesday in effort to remove sidewalk encampments