The union representing Canada Post workers is welcoming news that the Crown corporation will become the exclusive distributor of legal marijuana by mail in the province.

That's the indication from a leak of the some of the rules the province is preparing.

The Couillard government is expected to make that official when it tables its bill governing how pot will be sold once the federal government makes it legal next year.

Postal union spokesperson Yannick Scott says the move is good a good one for his members.

"Obviously it's going to increase the number of parcels, and the Corporation will need to readjust the routes so that we provide all Canadians with a perfect service," Scott says.

Scott says postal worker security may also need to be reviewed to ensure delivery people remain safe while carrying more weed.

Among the other highlights of the bill — online pot sales will be managed by the SAQ, Quebec's liquor board.