I think consumers because they are the ones who keep buying products, they keep demanding for goods and its their fault because the product is made for them and such. If consumers didn't keep buying products then the working conditions for these people wouldn't be bad, and they wouldn't suffer
Everyone is to blame I think; factory owners and CEOs are just more directly at fault. Consumers are not in control of the working conditions, but they are the ones that fuel the factories, since they're the ones the factories are getting money from. However, CEOs and factory owners are the ones that actually make the decisions. Capitalism is ultimately to blame, at least in the United States, because the less involved the government is in the regulations and requirements of factory conditions and such, the worse factories are allowed to be. However, in countries where the government is a lot more involved, or even in total control of factories and their regulations, etc., yet the conditions are still horrible, the fault would obviously be the government's.
Employees: They are the front line for their own work conditions. Seeing that they are the ones working in the conditions, they can take some steps themselves to improve/sustain them. Some poor work conditions come from employees that may not clean up after themselves or remove hazards they notice. If a safety issue is present but not something that they can control, they should report it to a their supervisor. If nothing is done, then push it further up the ladder till either they have pushed it as far as they can or a response is made.
Supervisors: Not only may those below them notice a hazard but they too may notice it as well as they move about the work areas. They too should either take action if they can or push it up the ladder.
Management: Tho they may not be around the hazard, they should take action where needed. Things like getting faulty equipment replaced or institute safety procedures.
Upper management/CEO/owner(s): These are the people that, in the long run, are responsible for the factory so if they fail to take action when notified of a safety use, the blame for an injury falls on them.
Government: Using agencies like OSHA, inform employers about work condition guidelines as well as the stiff penalties they may face should they be ignored. They should also keep current as new hazards may exist as new work environment are created.
Retail stores: Tho small retailers have little choice, larger retailers have real buying power. If they refuse to purchase product to be sold in their stores until proper safety standards are put in place, factory owners have a real motive to improve safety standards as selling to a larger chair retailer can mean millions or billions in sales for themselves.
Customers: When people go shopping, they are doing it in some of the store employees work space. Many times, they either make hazards or become one. Having worked at a retail store. I remember countless cases where customers have created hazards like tossing trash on the floor or bumped their carts into a ladder that an employee is using to stock the shelves.
In the end, safety in the work place should be everyone's concern. Injuries mean higher expenses to the businesses and that usually affects the price you pay at the register.