i would suppose that would depend on how one would define good works
they use their own definition that makes field service and meeting attendence "good works"...... hardly anyone besides themselves have a notable positive impact on their well-being from that "activity".... good for them, i guess
i do know at least in this area.... there are members of the congro that do exert themselves in behalf of the " widows and orphans" ( in the truth of course!) but it is not universal ..... if one is not exemplary, then they can eat sh!t and howl at the moon as far as the congregation is concerned..... the blanket phrase of exemption is " they should give jehovah something to bless" in terms of lock-step allegiance and compliance.....
good works? only in their collective according to their mother ship