Contract or no Contract?

[Kyler J Sloan]

I have a smaller job for (7.5 K) for installing a new walk in shower and bathtub-shower with new tile, etc. 

He seems incredibly efficient and professional. He says I do not need to pay anything until the work is done. 

What is more, he says he can get them done in 4 days during my only vacancy for the next two months (a short term rental) 

In a situation like this, would you have him sign a contract, request one from him, or would be opt out of using any contract?