Also she wants to work a full shift on black Friday, Christmas eve, boxing day sales and new years sales. Won't be so fun then when customers are shouting and swearing at you because you aren't allowed to give a refund without a receipt. Not being allowed to sit down, not being allowed to have water on the tills so you're dehydrated. No food or snacks on the shop floor, so you have low blood sugar on top of that. Busting for a wee but nobody to take over your till until its break time (which might be late because the shops is so busy).