Fed up with work conditions, employed at a large meat manufacturing/packing plant, and due to improper ventilation/exhaust of industrial ovens, production areas filled with smoke, along with elevated CO2 levels. Every shift has safety managers, but they signed off on allowing production to continue across two shifts. Smoke made everyone's eyes constantly water, was almost impossible to breathe after a full shift, and those that did go home sick were still penalized with attendance points. No care for employees or their safety and well being, managment only worried about numbers and making company owners more money. HR response is if safety says it's fine then it's fine. Would have quit on the spot if I didn't have a family and mortgage to provide for.