This one’s going to be a little controversial on this board, because I’ve seen some grocery-bagging screeds here in the past, but:
If cashiers (1) are being explicitly trained to not bag as they go, and (2) are implicitly expecting customers to bag their own groceries, please make those expectations clear to customers.
I know in some parts of the world and some parts of the U.S., expecting a grocery-store cashier to bag your groceries is gauche and rude. But in this area, the very longstanding business/cultural convention with groceries is that customers never bag. Ever. This is not Germany or the U.K. This is not the Pacific Northwest, or a northeastern college town. Re-usable bags haven’t made any inroads (available, but rarely used), and aren’t going to anytime soon.
So when I buy $200 worth of groceries, don’t slide all my items into an ever-growing pile as you scan them. Please don’t wait until everything is rung up, and then start bagging. If managers or senior personnel are teaching y’all to do it that way, please don’t (and shame on your trainers!). While, yes, I can and do get in the bagger’s stance and bag my own groceries at times, I view it as a significant inconvenience and a shirking of the store’s duty (and in this town, it very much is – this is not idiosyncratic).
Now then. If you want to change the local culture by making things happen a certain way in your store, that’s fine. Be upfront about it. Post a friendly sign near the checkout lanes that reads something like “To keep prices low, we respectfully ask customers to please bag their own groceries …” Around here, that would be a non-starter for most shoppers … but maybe your store can make the inconvenience worth the effort in some other way – prices, selection, better sales? Dunno. But the seemingly passive-aggressive piling up of scanned groceries is really off-putting.
I know, I know. I should cheerfully bag up my own groceries and like it. And by the way … have I ever worked as a cashier? Yes, yes I have. I have sympathy for a lot of things … but not for failing to bag as one goes. And if that somehow runs counter to modern grocery theory or something … the store is wrong. A cashier who scans a cart of groceries in 3 minutes and then takes another 3 minutes to bag it all is doing a worse job than a cashier who takes 7 minutes to scan-&-bag the same cart – the minute saved isn’t worth it.