A Guardian editorial today says, in the context of Boris Johnson's No-Deal Brexit plans as an unelected prime minister heading a minority government:
There is no justification for parliament not sitting at [this] time. It is therefore essential that MPs should be recalled from their summer recess. Holidays must wait or be terminated. Recall is not easy, since the government claims the power over the issue. Mr Johnson — who has also flirted with dismissing parliament from the process altogether — will not allow the Speaker to recall MPs before the scheduled return on 3 September. Both the last Labour government and the Speaker have argued that MPs should also have rights to have parliament recalled, but sadly these opportunities were missed.
Nevertheless, MPs should act as best they can. They should summon up the spirit of France’s 18th-century tennis court oath, when politicians pledged not to adjourn until their business was completed. MPs should draw up a petition for a recall and try to get a majority of the Commons to sign up. Legal action should be considered. The House of Lords, the devolved institutions and local councils can all hold emergency sessions of their own on the issue. MPs should consider occupying the Commons chamber to make the case against no deal. Britain needs a summer democratic revolt to isolate the government by every peaceful means possible. This country’s future must not be sacrificed upon the altar of Brexit.
Is this the time for parliamentary rebellion? If not now, what better reason might there ever be?
Give it a week or so and every MP can have had a holiday. Then they need to be back at work. There is no excuse for a long absence at this time of national crisis. And yes, they should rebel if need be.