Not exclusively, it says "the fire shall try every man's work" and does not say "every man's work in building the body of believers". Further, whoever it is that is being tested he "suffers loss but is himself saved". Where is your first-class ticket now? His luggage got lost?
7 So then neither is he that planteth any thing, neither he that watereth; but God that giveth the increase.
8 Now he that planteth and he that watereth are one: and every man shall receive his own reward according to his own labour.
9 For we are labourers together with God: ye are God's husbandry, ye are God's building.
10 According to the grace of God which is given unto me, as a wise masterbuilder, I have laid the foundation, and another buildeth thereon. But let every man take heed how he buildeth thereupon.
11 For other foundation can no man lay than that is laid, which is Jesus Christ.
12 Now if any man build upon this foundation gold, silver, precious stones, wood, hay, stubble;
He’s talking about the preachers and teachers within the church. It’s those who are the leaders of the church that build the church and each one of those leaders work will be tried whether they fed the people in the church with milk (weak teaching for new Christians) or meat (deeper teaching and understanding) for those who are growing stong in the faith.
If they are fed meat intended to grow strong Christians in the faith the “work” they did will last. If they have only fed milk and the Christians are still babes and weak in the faith they will fail or fall away when tried.
What man has done in his vain nature was supplant the Gospel of Truth with "another gospel". Now those who believe in this "other gospel" in their minds they're not wrong. The Apostle Paul warned us about this "other gospel" as he so clearly defines when speaking to the Galatians:
6 I marvel that ye are so soon removed from him that called you into the grace of Christ unto another gospel:
7 Which is not another; but there be some that trouble you, and would pervert the gospel of Christ.
Paul is saying there is really only one Gospel but men began causing confusion by perverting it
8 But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.
9 As we said before, so say I now again, if any man preach any other gospel unto you than that ye have received, let him be accursed.
Paul mentions this twice
10 For do I now persuade men, or God? or do I seek to please men? for if I yet pleased men, I should not be the servant of Christ.
11 But I certify you, brethren, that the gospel which was preached of me is not after man.
In other words, he did not receive this teaching in a seminary
12 For I neither received it of man, neither was I taught it, but by the revelation of Jesus Christ.
As we all should receive through the Holy Spirit
So through Doctrines of men being perpetrated against those worshipping in Truth and Spirit carries on thereby convincing followers they are correct , "in another gospel"