Our next section of Eccelesiates covers what Solomon refers to as the God-Given task and He opens with a rhetorical question:

Ecc 3:9  What profit has the worker from that in which he labors?

Ecc 3:10  I have seen the God-given task with which the sons of men are to be occupied.

The answer is there ultimately is no profit for endless laboring, happiness isn’t found in hard work day and night.  We can make money, but we can’t do anything with it when we die.  We remember back in Chapter 2, Solomon was so frustrated by this, he made all this money, but it would end up in the hands of one of his kids, who didn’t have to work for it.  Solomon isn’t necessarily saying that we shouldn’t work, and become loafers, but that happiness isn’t exclusively found in working day and night!  

Greed is an appetitive that is never full!  Most of the richest and most successful people in the world, are often the most miserable.