Two more agencies have announced their plans for a shutdown, one of them deeply involved in budget matters and another already bogged down due to the fallout from previous furloughs of federal employees.

The Congressional Budget Office, which among other responsibilities estimates the impact on federal revenues and spending of the sort of bill that could end the standoff, said it would “largely shut down.”

(J. Scott Applewhite/AP) (J. Scott Applewhite/AP)

The only employees kept on the job would be “those who were analyzing legislation being actively considered by the Congress during the shutdown or who were necessary to support that analysis. We expect that those people would represent less than 10 percent of the agency’s overall workforce. If a shutdown persists, we will regularly reconsider which employees would be needed to meet the pressing demands of the Congress,” the agency said in a blog post.

Separately, the Merit Systems Protection Board said that it will “cease all operations,” suspending the processing of appeals both at its regional and headquarters levels.

No staff will be available to answer questions, and even the electronic filing function will be shut down, it said.

The agency said that deadlines for filing appeals and certain other legal motions will be extended automatically by the number of days a shutdown would last. Hearings that were postponed would be rescheduled at that time.

MSPB is swamped with more than 30,000 appeals filed by employees who were furloughed due to sequestration in the spring and summer.