"for he is poor and to it he lifts his soul." This tells me only of one who is poor. Whence do I derive (the same for) one who is rich? This tells me only of labor that he does "with his soul" (i.e., in which he risks his life). Whence do I derive the same for labor that he does not do "with his soul," such as that of a weaver or a carder? From (Vayikra 19:13) "You shall not oppress your neighbor … and "there shall not abide with you overnight the wages of a hired man" — in any event. If so, why is it written (Devarim, Ibid. 14) "poor and impoverished"? I hasten to exact payment for (such abuse of) one who is poor and impoverished more than for that of other men.
Pay Your Workers Promptly, Not Just the Poor Ones
Sifrei Devarim 278:2