You expect your workplace to be a safe environment. Depending on your occupation, you may or may not be in love with your job, but you probably consider it generally healthy and safe. However, no workplace is completely safe from potential environmental hazards or improper maintenance.
In many ways, workers' compensation is the great bargain that ownership and labor arrived at before our time. Companies today are required to carry insurance that pays employees if they are injured on the job in exchange for workers not suing them in court.