Working in many organizations can be dangerous, too. Each year hundreds of thousands of workers throughout the world die of work-related accidents and illnesses. Over 100,000 deaths occur in North America alone. Hundreds of thousands of workers suffer from occupational diseases of varying severity, such as heart disease, eye strain, back pain, stress, or lung ailments. Only the worst hazards are closely monitored or controlled. Others occur within the law and are frequently treated as inevitable aspects of the lines of business in which they occur. Accidents and occupational disease, like pollution, are often viewed in a way that places more emphasis on costs and the "bottom line" than on the health of employees.