According to the United States Department of Labor, Labor Day, which is annually celebrated on the first Monday in September, is a creation of the labor movement and is dedicated to the social and economic achievements of American workers. It constitutes a yearly national tribute to the contributions workers have made to the strength, prosperity, and well-being of the country.

To those who are citizens of God’s kingdom (Philippians 3:20), we ought to be able to celebrate Labor Day as well, which is possible as long as we have made contributions with our life that last the test of fire (1 Corinthians 3:14-15). The labor that stands the test of fire is the labour that in not in vain in the Lord.

In order for our labor to not be in vain in the Lord, the Bible teaches us the principles that are recorded in 1 Corinthians 15:58. 1 Corinthians 15:58 reads “Therefore, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the Lord.”
First, we need to be steadfast, that is we need to stand firm, which is only possible if the foundation we stand on is firm. There is no other foundation that is firmer than Jesus Christ (1 Corinthians 3:11).
Second, we need to be still (Psalm 46:10), that is be unmoveable. We must not waver in our faith but be faithful, keeping the faith (Revelation 14:12; Acts 14:22) till we see Christ face to face.
Third, we need to surmount, that is abound, in the work of the Lord. With God, there is no unfinished business (Philippians 1:6) and God is able to make his grace abound toward us so that we may have sufficiency in all things and that we may abound to every good work (2 Corinthians 9:8).

Points to ponder:
Do you want your labor to not be in vain? In other words, are you steadfast, are you still and is your work surmounting? If Jesus Christ is not your foundation, I beseech you to believe and trust in him for when on Christ the Solid Rock, we Stand, we are steadfast and need not fear the sinking sand.

1 Corinthians 15:58 (KJV)
58 Therefore, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the Lord.

2 Corinthians 9:8 (KJV)
8 And God is able to make all grace abound toward you; that ye, always having all sufficiency in all things, may abound to every good work: