Last week, they declined requests to do so, a fact that MPs from all parties expressed concerns about on Monday.
A summons from a Commons committee has legal force, and the motion gives the brothers until Friday to appear.
The Commons ethics committee wants to hear from the Kielburger brothers as part of ongoing scrutiny of a federal agreement to have WE manage a now-cancelled student services grant program.
But the charity had noted that New Democrat MP Charlie Angus has requested that the RCMP and the Canada Revenue Agency investigate WE’s operations.
The charity said it would be unfair to subject it to what it called a partisan committee investigation at the same time.