If what you mean by PoS is Proof of Stake, it is a type of consensus that is quite reliable in the world of cryptocurrency. A lot of money has flowed into this PoS mechanism, and there are also advantages and disadvantages to this mechanism. It could be that even though you are paid using the relevant coins according to the contract, you end up losing money because the price of the coins is not in your favor.
It looks simple and requires a lot of money, but it is still risky.