Why do cashiers give you the change & receipt all in one go! When i worked in shops many moons ago you were trained to first, count out the loose change, then the notes, then the receipt last.
Because counting up to the value of the amount tendered used to show that the cashier had correctly calculated the change. Now that the till (or, more accurately, the store's EPOS system) does that automatically the process is no longer necessary.
I always try to give the change first, then hand notes over. That way the customer can hold the change in their hand and grab the notes with a couple of fingers.
Though the EPOS system will tell the cashier how much change to give in respect of the transaction/amount tendered it is still the cashier who counts the change out and the cashier should count it back to the customer as a double check to confirm accuracy- in all the stores where we carry out compliance auditing in, this criteria is part of the visual till operation checks
Take my advice, whenever a cashier examines a £20 note (to check it is genuine) that you have tendered in payment for goods – make a point of carefully examining any bank notes given in change (holding it up to the light to observe the watermarks) – while doing so, occasionally glance at the cashier, to suggest that they are the type of person who would try to palm off a hooky bank note.
i think many just think it looks nicer...more 'neat' or something...like a little parcel or pile of change for you...no logic though, as you of course have to scrumple up the note to stop the coins falling, or angle it over your purse and pour them in