US President Barack Obama vowed Saturday to work tirelessly to get unemployed Americans back to work now that new statistics have shown a slight improvement on the job creation front. "My commitment to you, the American people, is that I will focus every single day on how we can get people back to work, and how we can build an economy that continues to make real the promise of America for generations to come," Obama said in his weekly radio address. The US labor market witnessed a dramatic improvement in November as the number of jobs lost narrowed to 11,000 and the unemployment rate dipped to 10.0 percent, official data showed Friday.