One of the problems with the "Just Culture" as I have witnessed it, is the opposite of what many are posting here.
As a 33 year time served engineer I saw many occasions where a person had negligently worked outside of a laid down procedure or practice and received nothing more than a "don't do it again" or "write a Cockpit article".
The fear that they will "lawyer up" and potentially uncover unit managerial failings during the process often causes a "soft" approach.
I still believe that removing someone's supervisory status for "re-education" works wonders to focus the attention, or giving a lad monthly QM checks should happen to make him realise he needs to do better.
Troop the buggers once in a while, if the procedure is in the book and they willfully ignore it, they are breaking the rules and need to be told so.
Cheers