24hours shopping

Tesco in Dundalk -opening hours from 9.00-9.00.
When I came to Dundalk I got to know, that Tesco is open 24hours daily. In Germany the shopping hours have been increased but it is still not allowed for shops to be open in the night. Shops are also not allowed to be open on Sundays. Only kioks are allowed to be open after 11pm and on Sunday.
There was and I think, there still is a debate in Germany, if they should handle the opening hours by law or if they should leave the shop owners decide.
I don´t really know the answer. From my point of view there are of course many advantages to have a shop open for 24 hours, but for the employees it might have also disadvantages. It can create new jobs and people could earn more money, but the employees could be forced to work in the night although they have family.
Onother point is, that I don´t know, if it is raelly cost-effective to have for example Tesco open in the night. I remember the few times when I was shopping there in the night: There were nobody else in there. Maybe the stuff uses the time to arrange the items and fill up the shelves but after that is done there are a few peole standing arround and have nothing to do. One time I went there after the amber to do my shopping for the next days but the other few times, we went there in the night only to buy some biscuits and kindereggs and sat infront of the entrance to eat them. :)
I could imagine, that the 24hours opening is more a service for the custumers than cost effective. You don´t have to think about that Tesco might be closed or not, you can go there everytime and it will be open.
Since Lidl is next to Tesco that could be a reason for people to go to Tesco, because they are used not to think about the opening hours.