One of our more senior workers is very comfortable at work. So much so that a lot of very small mistakes are being made that when they cascade turn into pretty big issues.
Other workers are starting to get a bit angry or annoyed since this one worker is causing more work for everybody. He has been talked to about this and it doesn't really change anything.
Are there any constructive ways to tell this person they need to be less comfortable and a bit more conservative?
To clarify, I think if a person needed to make a big change that could have a big impact to a lot of people. Usually there would be some levels of anxiety involved. It varies based on person. An overly comfortable person is cavalier. A uncomfortable or conservative one would still be worried even when they are pretty sure they did it right. They're the type that would double check their work. This worker is cavalier.