The best places I’ve worked have had supervisors who are willing to take ownership of their mistakes and are open about how they work to improve. There are limits (no free passes for mowing down a dozen grandmothers running a soup kitchen, for example) and the improvement work has to be relevant and sincere but when it’s done right, this is a worthwhile example to set. Also shouldn’t come down like a ton of bricks if the new hire does something dumb and comes forward when they recognize their error. Can save a lot of time, money, and aggravation when the work environment prioritizes fixing the problem over assigning the blame.