They might get fired but no one has to “seek” extra work, there’s no legal obligation. If they do their simple existing task, they are meeting known expectations.
I mean it doesn’t sound like they’re seeking ‘extra’ work, because Anon is not doing any work at all. I’d argue there’s a difference between ‘extra work’ and ‘any work’.
They’re not meeting expectations either because the expectation for their role is unlikely to be ‘doing fuck all’, the expectation is doing whatever job is outlined in their JD, which they’re demonstrably not.
Again, I don’t really care either way. Do what you can get away with, but be cognisant of the risks, and how that might affect your future employability otherwise you may find yourself doing nothing because you don’t have a job at all.
I agree that anon shouldn’t have given away their existing tasks. And that being fired is the likely end of this road.
Just clarifying that if you are doing your stated tasks, you aren’t in some sort of legal violation by not seeking more work. You.might get passed over for a later promotion, or deemed as dead weight in a layoff round, but you aren’t doing anything criminal