A government shutdown next week would interrupt some services and potentially jeopardize the paychecks of more than 800,000 federal workers. The Office of Management and Budget has asked agencies to begin making contingency plans. Their first stop will be their plans from 2011. The federal government does not stop functioning completely, and by law, certain agencies must operate with unsalaried employees. They include those that deal with national security and the safety of people and property, as well as those that manage benefits such as Social Security payments. Here’s what some agencies have said about their plans this time around.