Thankless

It's a thankless job.

"But why the thankless story should ye hear? / Why stay your hand? If Grecians in your sight / are all alike, ye know enough; take here / your vengeance. Dearly will my death delight / Ulysses, well the deed will Atreus' sons requite."

It's thankless, dull work, but the job security is pretty decent.

This is a thankless job.

I have a thankless job.

Being a boss is a thankless position.

In a raucous atmosphere, it was an unforgiving and physical contest from the start. Grant Hanley conceded the first free-kick within the opening 20 seconds, setting the tone for a busy and thankless evening for Serbian referee Milorad Mazic.