Its only natural person need some rest mentally if not psychically,while 12h sonds terrible if its paid im in,i work 8hour in fabric then i go work privately where i earn more money then at my regular job (sometimes i earn 2-3 times more than in fabric)but only thing that keeps me in fabric is constant payment every month,secured job,pension & helthcare ,where i earn near twice as regular worker but i have wife and kids so you can call me greedy so i work privately to earn more, people are leaving for austria,germany to earn this kind of money for their 8-12h (depends which they take) worktime ,but im home not far away ,for mr its better being productive then getting bored and lazy at home(while i also keep some agriculture here it woldnt take much time over a year )