But isn't it simply human, to make simple errors?
An HF awareness during investigation of said errors should (in an ideal world) produce realistic procedures and/or training to either prevent said error from occurring, or mitigating the seriousness of any consequence.
Does this not happen at your workplace?
I mean, are we talking genuine HF-style events, or is it more along the lines of a casual approach to safety related things?
The impression I get from the OP is that when it comes to safety at your organisation, the answer from above is along the lines of "The floggings will continue until morale improves."