This question already has an answer here:
- What's the Word for a Token Job? 3 answers
I want to describe: a job-position that is given to someone as a way to appease the person, but the position holds no real function.
He was, due to his importance to the secret project, offered an honorary ____ with disproportionally lucrative payment.
The job is given by the authority to the person as a way to basically bribe him with undeserved salary, because he won't be given any real task. The emphasis here is payment, and not power, so "figurehead" would be inappropriate.