we place all cards that are discarded during the game face up under the carddeck. If the carddeck is empty (doesnot happen very often (mostly 4 Player game)) we shuffle them and then they come back into play.
The buisiness cards that does not hit the starting conditions are shufled under the specific deck, before start of the game. So they can come up during the game.
Hope this will help you
Thanks for the response. Is this your way of handling it or do the rules specify somewhere how to do it?