As used to work in a grocery store and really worked there for five years. What irked me and others that were full time was that part time workers that were mainly kids that got the hours due to not having benefits.
And that the full timers should usually get the hours and the benefits. Plus the weekends off. But that was not the case by any and all means. Really wasn't fair for those that had families to feed that needed to have the weekends off. As those part time workers complained about it. They didn't seem to understand it why they had to work the weekends and the full timers did not.
Just think that the part time workers should work on the weekends and the full time workers with benefits should just work during the week and have the weekends off. These days it seems these part time workers just show up for the check but don't actually work. While the full time people that have to work due to feeding their families.