he problem with a long-hours work culture is that long hours don't translate to productivity, [Citation needed]. Note that citing a source that vaguely assert

he problem with a long-hours work culture is that long hours don't translate to productivity, [Citation needed]. Note that citing a source that vaguely asserts data exists is insufficient. So is citing a source showing that mean hourly productivity in construction/manufacturing goes down. Make sure to differentiate between lowering productivity (=production/hours) and lowering product in your answer.