New Living Translation
This is the case of a man who is all alone, without a child or a brother, yet who works hard to gain as much wealth as he can. But then he asks himself, “Who am I working for? Why am I giving up so much pleasure now?” It is all so meaningless and depressing.

American Standard Version
There is one that is alone, and he hath not a second; yea, he hath neither son nor brother; yet is there no end of all his labor, neither are his eyes satisfied with riches. For whom then,'saith he , do I labor, and deprive my soul of good? This also is vanity, yea, it is a sore travail.

Berean Study Bible
There is a man all alone, without even a son or brother. And though there is no end to his labor, his eyes are still not content with his wealth: “For whom do I toil and bereave my soul of enjoyment?” This too is futile—a miserable task.

Douay-Rheims Bible
There is but one, and he hath not a second, no child, no brother, and yet he ceaseth not to labour, neither are his eyes satisfied with riches, neither doth he reflect, saying: For whom do I labour, and defraud my soul of good things? in this also is vanity, and a grievous vexation.

English Revised Version
There is one that is alone, and he hath not a second; yea, he hath neither son nor brother; yet is there no end of all his labour, neither are his eyes satisfied with riches. For whom then, saith he, do I labour, and deprive my soul of good? This also is vanity, yea, it is a sore travail.

King James Bible
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.

World English Bible
There is one who is alone, and he has neither son nor brother. There is no end to all of his labor, neither are his eyes satisfied with wealth. "For whom then, do I labor, and deprive my soul of enjoyment?" This also is vanity. Yes, it is a miserable business.

Young's Literal Translation
There is one, and there is not a second; even son or brother he hath not, and there is no end to all his labour! His eye also is not satisfied with riches, and he saith not, 'For whom am I labouring and bereaving my soul of good?' This also is vanity, it is a sad travail.

Ecclesiastes 4:8 Additional Translations ...