Northrop Grumman has notified nearly 300 of its Suffolk employees that they may be laid off this month, a company spokeswoman confirmed Wednesday.

A contract the company has with U.S. Joint Forces Command is expiring, and the company is not yet sure if it will be renewed, said Leah Smith, a spokeswoman for Northrop Grumman’s sector communications and technical services.

“With JFCOM going away, there are some people within that number that directly support JFCOM,” Smith said. “There is the potential for it happening.”

Under a federal law, companies that see a potential for 50 or more layoffs at a time must report that to the Virginia Workforce Network, which posts a notice online.

Northrop Grumman’s 293 employees involved in the potential layoffs supported contracts at the Joint Warfighting Center, which is located on the Suffolk JFCOM campus.

Gen. Raymond T. Odierno, commander at JFCOM, said in February that the changes will result in only about 1,450 employees at the Suffolk facility, out of the 1,900 to 2,000 that currently work there. The command will be disestablished by August, and employee moves will be done by March 2012.

The three buildings at JFCOM will be reduced to one.

Smith said if there are any layoffs, they could come by April 24.