How you work and the attention you pay to your tasks when no one is watching defines you and your work ethic. If you act and work one way when being watched, but work a different more detached way when you are on your own, then watch out.
I have plenty of examples of people who in doing a poor job caused many others hours of extra work. Once this is figured out, guess what happens?
One who is slack in his work is brother to one who destroys. Proverbs 18:9