USG conference call (webcast and presentation): A coming labor shortage? Company brass suggests low availability of labor - contractors, drivers, laborers - as maybe being the top headwind to growth in 2013. Many in the business have moved on, and companies - not believing in the recovery - have been slow to hire. A drywall price hike is schedule for Jan. 1. Shares +5.3% after diving nearly 10% at the open following the earnings miss.