The labor buyer raises it to maximize profit. Not because the employees will receive more wages. They get paid more if profits rise. Who keeps most of the increase in value? Not the workers. Thus, when the labor buyer wants to increase the pace, it is to increase his own profit, not the employee's.
Try to be in solidarity with the employee who cannot always keep up with the pace. For the most part, your heavy workload is not due to him, but to the demands of the labor buyer. Next time, maybe you're the one who's tired.