Same guys always at 7pm, don't check in

Whenever I do a late block(6:45pm or7pm) I always see the same 7-10 guys standing around just talking. The last 7pm block I had, which is the latest blocks start at my station, I was rushing and scanned my ID at 7:01. These guys looked at me and laughed all laughed at me and started saying something to each other in what sounded like Russian. I waited for my cart and didn't get one until 10 minutes later. These guys were still standing around, not checking in afaik. Are they checking in very late after all carts are gone so they can get sent home with pay? If so,I feel like they are some of those who take base pay knowing they are gaming the system and free money is free money. Anyone else have this going on at their station?