Fatigue and Efficiency: A Study in Industry

accidents actual allowed amount attention average become blood called carried cause cent close continuous contractions Court dangerous diseases earn effects efficiency effort eight eight-hour employed employers employment energy enforcement establishments exhaustion experience fact factory fatigue girls gives greater hand hours of labor human important increase industrial inspectors interest laundry legislation less limits living machine machinery manufacture mechanical ment mills muscle muscular nature nerve nervous night observation occupations operators organism output overtime overwork period persons physical physicians physiological poisons practically present processes production protection record reduced regarded rest scientific season seen short shorter showed similar speed statistics strain telephone tion trades true United wages week women workday workers York