Steven is solely responsible for maintaining the machines at the factory. Fixing problems with these machines is not trivial, but should be relatively quickly understood by most people with adequate experience after some effort.
Steven is concerned about his replaceability at the company and is over time building up many complex processes and rules for maintaining the machines. He still manages to do the work quite efficiently, but doesn't hesitate to let his colleagues know how difficult the machines are to maintain and that they are lucky to have him there.
Anyone else trying to follow Stevens guidlines for maintaining the machines when he is on vacation is overwhelmed by the apparent complexity of taking care of the machines, so they are all glad when he is back.
Steven is afraid of his job so he [...].
[...] is unfortunately common in profession X.
That manager is all about hand-waving and [...].