Here are 12 Bible verses about working too much from the Old and New Testaments of the Holy Bible (King James Version), sorted from most to least relevant.
Colossians 3:23-24 KJV
And whatsoever ye do, do it heartily, as to the Lord, and not unto men; Knowing that of the Lord ye shall receive the reward of the inheritance: for ye serve the Lord Christ.
Psalms 127:2 KJV
It is vain for you to rise up early, to sit up late, to eat the bread of sorrows: for so he giveth his beloved sleep.
Colossians 3:23 KJV
And whatsoever ye do, do it heartily, as to the Lord, and not unto men;
Ecclesiastes 4:4-9 KJV
Again, I considered all travail, and every right work, that for this a man is envied of his neighbour. This is also vanity and vexation of spirit. The fool foldeth his hands together, and eateth his own flesh. Better is an handful with quietness, than both the hands full with travail and vexation of spirit. Then I returned, and I saw vanity under the sun. There is one alone, and there is not a second; yea, he hath neither child nor brother: yet is there no end of all his labour; neither is his eye satisfied with riches; neither saith he, For whom do I labour, and bereave my soul of good? This is also vanity, yea, it is a sore travail. Two are better than one; because they have a good reward for their labour.
John 5:30 KJV
I can of mine own self do nothing: as I hear, I judge: and my judgment is just; because I seek not mine own will, but the will of the Father which hath sent me.
Matthew 13:23 KJV
But he that received seed into the good ground is he that heareth the word, and understandeth it; which also beareth fruit, and bringeth forth, some an hundredfold, some sixty, some thirty.
Colossians 2:8 KJV
Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ.
1 Corinthians 14:33 KJV
For God is not the author of confusion, but of peace, as in all churches of the saints.
Philippians 4:6-7 KJV
Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God. And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus.
Romans 11:33 KJV
O the depth of the riches both of the wisdom and knowledge of God! how unsearchable are his judgments, and his ways past finding out!
Matthew 13:22 KJV
He also that received seed among the thorns is he that heareth the word; and the care of this world, and the deceitfulness of riches, choke the word, and he becometh unfruitful.
Job 21:13 KJV
They spend their days in wealth, and in a moment go down to the grave.