Working extra just serves to allow your employer to leave that vacancy vacant forever, pocketing the money saved on the extra wages. Really, the best thing you can do is put in an average or slightly above-average effort and then talk to people about how much work and how successful your work is. Communication and “peacocking” play into success more than actual aptitude.
This worker shared how they were going to begin sticking to the hours they were paid to work and how doing so, and the intentionality and focus that came with it, actually improved their productivity. Their story sparked discussion in this online community.