Pros
To say that there are pro's to working this job would be to undermine your own self-worth.
Cons
Encouraged to do overtime without any reward or acknowledgment - I distinctively remember being asked to do a stock count of the entire store and then being dismissed the following day on the basis of not making up 3 minutes missed. It is an unusually classist organisation, meaning that you will meet people who have worked for the company and strangely their children will be too, who somehow have managerial positions within the company. Extremely racist, I could not shake this from my experience working there - I have since avoided Waitrose and John Lewis solely because I remember how it felt to be working there - overworked and underpaid. There is a big difference between the treatment of people from a non-black or Indian background and people who are -- so essentially, if you are not black or Indian you will be treated sub-par and like you are unwanted.