If you got some power (mid- or high-echelon), a good way to sabotage is to make your subordinates less productive. A few examples:
Complains are best directed when the person is busy, to force them to drop off whatever they’re working on to listen to you. Resuming work takes a bit of time.
It’s impossible to do something cheap, fast, and well; if it’s cheap and fast it’s crappy, if it’s good and fast it’s probably expensive, and if it’s cheap and good it’s probably slow. This means that you always have some grounds to complain about the work, demoralising the worker.
If there are two essential tasks, A and B, and your subordinate is doing one of them, redirect them to stop what they’re doing midway to do the other task. And if they’re juggling both complain about inefficiency.
Be a PoS/assumer/shithead, I: assume that they’re doing it wrong, grab it from their hands, and spend a few minutes explaining what they already know.
Be a PoS/assumer/shithead, II: if something was not done yet, assume negligence, never that the person was busier with something equally or more important.
Be a PoS/assumer/shithead, III: assume that criticism is a direct attack against you from an ignorant.
Give a condescending lecture about their work but focus on irrelevant things.
If someone seeks mentorship for what they need to do to position themselves for career improvements, give wishy-washy responses that give the overall impression that you want to set up as many outs to deny the promotion as possible.
Give them a task about something that is completely new to them and demand results by the end of the week.
Continue pursuing projects even after their useful parts have been determined unfeasible.
If you got some power (mid- or high-echelon), a good way to sabotage is to make your subordinates less productive. A few examples:
Source: that’s how my parents raised kids!