I like to talk to cashiers, most of whom respond politely and I try to show an interest in their day by asking, “Have you had an early start?” (5.00a.m. is typical at the larger branch of Lidl which opens at 7.00 a.m) or “It’s busy today but I guess that makes the time pass more quickly for you.”
Over time, I've heard many positive facts about Lidl as an employer. Apparently, they pay above the minimum wage, offer decent sick pay and a pension scheme and staff say they like the fact that they're not just on the tills all day but are expected to move from that to shelf stacking, unloading deliveries, etc., as the need arises.