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I think "more than what's expected" would be a more general trope, but I don't know that either.
We can never truly eradicate the coronavirus, but we can suppress its threat like influenzaI'd probably file this under Moving the Goalposts. You're being forced to do a task that was not the one that was originally agreed on.
Edited by BattleMasterAh! Thanks.
See also Fence Painting for when the job is portrayed as cool or fun- say, the ad for a lifeguard position plays up the "king of the pool" portrayal and neglects to mention that it's 99% sitting in a chair and yelling at teenagers for hours on end.
Okay, do we have any tropes for jobs taken with a workload that is rather greater than advertised? Not necessarily a job you'd be embarrassed to have, like a Burger Fool.
The example I have is of someone taking a summer job advertised as lawn care of a small lawn, only to find out the lawn is massive, the mower is an iron monster he has to fight to move forward(let alone in a straight line), and "lawn care" apparently includes maintenance of the gutters and hedges. Add to that the client is willing to dock a day's wages if he doesn't see any progress. Obviously this isn't an embarrassing job to have, but clearly the job is much more involved than advertised.