Delegating work to an AI agent does not remove the work. It converts production into supervision, and supervision carries its own cost. The human stops being the author of the output but keeps accountability for it, so understanding has to be reconstructed after the fact rather than built while doing the work. That reversal is where the fatigue starts.
Engineering teams see it as a bottleneck migration: generation gets cheaper, review and judgment become the constraint. The visible sign is more pull requests and more generated diffs; the invisible sign is that senior people spend their day checking whether the agent solved the right problem or merely produced plausible output (this analysis of agent cognitive load).
Call centers saw the same pattern with voice agents. Supervisors monitoring many concurrent AI conversations drown in transcriptions, sentiment streams, SLA timers and alerts, which produces alert fatigue, delayed escalations and supervisor burnout (a study of supervisory control in call centers). The mechanism is not volume alone; it is that supervision demands sustained attention across many parallel threads.
Burnout itself is defined by the World Health Organization as an occupational phenomenon arising from chronic workplace stress that has not been successfully managed, with three dimensions: energy depletion, mental distance or cynicism, and reduced professional efficacy (Mental Health America's summary). Reviewing agent output hits all three: it is tiring, it can feel pointless when the agent keeps repeating mistakes, and it erodes the sense that your own craft is advancing.
The practical conclusion is blunt. If you hand off work without designing the review, you have moved cost from the people doing the task to the people checking it, and you have hidden it in their calendars.



