You should always follow the rules at work.
There is a rule at Jon's work that employees must ask a supervisor before getting supplies from the warehouse.
Jon wants to get some supplies form the warehouse.
John asks his supervisor if he can go get some supplies from the warehouse, and they tell him to go ahead, so he does.
Jon decides to just get his supplies from the warehouse without asking his supervisor first.
John gets his supplies and is commended for following the workplace rules.
When Jon's supervisor sees that John has gotten supplies without asking them John is fired.