Labor begins out of necessity, and as such, contains both elements of pleasure and pain. It is the product of labor, and the end that that product is put towards, that transforms the nature of that labor as it progresses.
The products of labor transform one's own perception of that labor, and therefore one's motivations in undertaking it. If it is a product that makes one proud, and brings about one's health and happiness, or the health and happiness of others, then that labor process moves in the direction of pleasure and joy.
If it is a product that brings one shame, or damages oneself or others, or is simply taken from oneself without one's ability to enjoy its circulation in the community, then that process proceeds towards one of pain and arduousness.
