Coach Joe Gibbs said on the team's Web site it was felt some recent workouts were too physical. That is a violation of league policy.
"They found that our offensive lineman and defensive lineman drills were too physical," Gibbs said. "We'll not have work here of any kind other than treatment. Next Thursday, we'll resume our workouts with an OTA (open team activities) day, which will lead right into mini-camp."
The team said its players are not permitted to be at its facility on those days, but will be paid for the sessions. The ruling came after an employee of the players union viewed video from the Web site and notified the league of their concern.
Gibbs said team officials and coaches believed they were operating under contract guidelines.
The team will forfeit the period from June 13-15.