I was talking about Ephesians, not Romans.
First, Paul is clear in Romans that God "will repay everyone according to his works." What is true in Romans is also true in Ephesians.
Turning to Ephesians, we see here that Paul's use of "works" is the same as in Romans, i.e. "works of the Law."
For by grace you have been saved through faith, and this is not from you; it is the gift of God; it is not from works, so no one may boast. For we are his handiwork, created in Christ Jesus for the good works that God has prepared in advance, that we should live in them. Therefore, remember that at one time you, Gentiles in the flesh, called the uncircumcision by those called the circumcision, which is done in the flesh by human hands, were at that time without Christ, alienated from the community of Israel and strangers to the covenants of promise, without hope and without God in the world. But now in Christ Jesus you who once were far off have become near by the blood of Christ. For he is our peace, he who made both one and broke down the dividing wall of enmity, through his flesh, abolishing the law with its commandments and legal claims, that he might create in himself one new person in place of the two, thus establishing peace, and might reconcile both with God, in one body, through the cross, putting that enmity to death by it. He came and preached peace to you who were far off and peace to those who were near, for through him we both have access in one Spirit to the Father. So then you are no longer strangers and sojourners, but you are fellow citizens with the holy ones and members of the household of God, built upon the foundation of the apostles and prophets, with Christ Jesus himself as the capstone. Through him the whole structure is held together and grows into a temple sacred in the Lord; in him you also are being built together into a dwelling place of God in the Spirit. (Ephesians 2:8-22)The works which might cause boasting that is mentioned here is what had, up to then, separated the Jews and the gentiles, i.e. circumcision and the Mosaic Law. In Christ Jesus Jews and gentiles have been united into one body with the abolition of circumcision and the old Law of Moses. To read Ephesians to mean that we are no longer bound by the moral law is to misunderstand Paul. This is made clear in the following:
So be imitators of God, as beloved children, and live in love, as Christ loved us and handed himself over for us as a sacrificial offering to God for a fragrant aroma. Immorality or any impurity or greed must not even be mentioned among you, as is fitting among holy ones, no obscenity or silly or suggestive talk, which is out of place, but instead, thanksgiving. Be sure of this, that no immoral or impure or greedy person, that is, an idolater, has any inheritance in the kingdom of Christ and of God. (Ephesians 5:1-5)These words are spoken to believing Christians, not to pagans who have not yet accepted Jesus Christ. Despite our faith, immorality can loose us our salvation. Protestant attempts to take the words of Paul in isolation to support "faith alone" are examples of forcing Scripture to support the man-made traditions of Martin Luther and the other Reformers rather than relying on Scripture itself.