100% agree. Doing this in secret without management's express approval means no bonus, working extra for no benefit, compromising your other tasks and exposing yourself to heavy liability for compromising the country's infrastructure. This is something that companies could get away with, but a single developers would not only lose their job, but risk going to jail.
Note that management's express approval could be verbal conversations that you cannot prove happened or not. With some work management can find some way to get a developer who has some other conflict of interest to do this: if your brother in law works for the maintenance yard situations then you have motive to ensure he has work.
