an employmenty question

if someone is hired to do a particular job and retained for that particular job and then told that they cannot take a sideways move to another job because they are Too Essential

but then the boss of the department keeps directing work to someone else who is wholly unqualified in the field, without even copying the original person in so they dont' know that quite essential stuff is happening in their nominal area

reckon you could take them to tribunal?

I know this is annoying and vague and there is no salaciousness 

the first person has spoken to the boss about it on many occasions and in many ways

the boss acknowledges the issue then keeps doing it (suspect because the other person is "quite charming")

the claim would be for not fannying around I suppose? dunno, don't know anything about employment law

the person would probably leave the organisation anyway (and nobody would think badly of a person for taking that organisation to tribunal)

Quit and they can claim constructive dismissal. Not the easiest claim to bring and although being overlooked can in principle get you over the line then it isn’t the strongest argument - certainly not in isolation. Even weaker if they’ve resigned to take up another job.

Dont quit and they are limited to trying to craft some sort of shit discrimination claim.