Well, I think investing in your public servants, for example, at the federal workplace is one suggestion. Good, healthy labour relations are also important.
I do think that training for managers is really important. Really, you can go to all the workshops you want, but if you don't actually implement the policies or the guidelines, if you don't change your behaviour, it's not going to make a difference.
There need to be some incentives for keeping people happy at work.