Work is a social environment, not just a set of harsh weather conditions and predators. What's more, they were each other's tools in that contest. The evolution of human beings has consisted largely of adaptation to each other. Note that this adaptation is as apt to be cooperative as competitive. They are housed in our mind, actualized in our behavior, and outlive us, always searching for a receptive niche in the cultural environment.
Memes can be very compelling, in the same way that genes compel certain behaviors.
They can be persistent and long-lived. Values implanted through early socialization are very much a part of us, and we hope that a good choice of occupation is not only consistent with those values, but nourishes them and encourages them to propagate. Viewed in this light, the perfectly adapted employee is in a reciprocal relationship with her work environment. Vocational adaptation is a kind of mating that enhances the survival of important values. The synergy created between employees and employers becomes the optimal medium in which their shared values can thrive.