Modern offices are very different from those of the past. These days, many offices are designed to be environmentally friendly. In the past, the environment was rarely a concern. Now companies are learning that helping the environment can also save them money. Workplaces have also become safer for employees. In the past, companies wanted to avoid injuries. But they usually focused on accidents and not on injuries that happen slowly when employees repeated the same actions over and over again. Now workplaces are beginning to focus on preventing all sorts of injuries and health problems. Maybe the biggest change in modern offices is the flexibility they offer workers. Many employers now provide employees with flexible working hours. Some even allow their employees to work from home.