If the task is both undesirable, difficult to find people to fill, and yet widely sought after and greatly needed, the word you're looking for is "lucrative."
Example: plumbers.
Excel wizards: quit your whining and go make bank.
"Tech Support"
Cursed.
For certain curses I suppose [0]. I wanted something more general because not having words for certain concepts can affect the perception of that thing e.g. make it less relatable.