The plant owners (meat packing plant owners) wanted nothing but work from workers and money from buyers. They didn't care if you died got sick or hurt. You packed the meat no matter what, and you bought the meat and got sick. Plant owners wanted low pay rates, hard work, and dedication. If you got sick you got sick and they threw you out an found another person to work. They wanted workers the could use and discard. Their main goal being make profits.
When Sinclair says "there was no place in it where a man counted for anything against a dollar...", he means