Not particularly relevant to the article, but a fun fact is that in France -- there's no such thing as after hours reseting in grocery stores. When the store closes -- everyone goes home.
A lot of grocery stores have non-employees stocking shelves now, usually during the day. These are reps from the vendors, like potato chips or specialty foods that rent shelf space in the store are and responsible for maintaining them.
Even 30 years ago when I was a student worker in a food store that sort of task only happened after 22:00 when the last customers had left.