And as a worker who has been part of a few mass reorganizations/demotions, I can tell you that I and most of the workers would see this workshop as a real slap in the face - a company that can't be bothered to actually create a workplace that respects the work we do, instead they want to set up a workshop to make us feel better about a crappy workplace.
That's why I'd like to give them something that empowers them personally instead of confusing them with techniques that will take years to learn. Give them something they can really assimilate in one day and empower them with the self knowledge and self respect to get a better job.
So I would hope.
Best to all.