Some of the posts here seem to be pushing more of a no blame culture - not a good thing.
A just culture sits between blame and no blame. Errors, mistakes etc are tolerated and looked upon as opportunity to learn. However, if someone wilfully violates a clearly defined system then they can prepare to face the consequences.
You cant hide behind a 'just culture'. If serious misconduct is evident, we can expect police intervention. Pilots failing alcohol screaning will be a good example........!