Near me there was a small hotel and a brewery who were mainly seasonal and ran using J for their seasonal staff, worked out, I seem to remember they colluded in the one day a week cultural thingy.
And of course the Ski Resorts use a lot of J's, the Supermarkets are mainly H2b's, I was intrigued and asked one of the guys.
None of these occupations were in anyway not basic seasonal jobs, although I seem to remember that the hotel got their IT systems upgraded as one of the guys was in IT and sorted it out for them.
Both closed a few years back.