Nonschedule injuries are less straightforward and must be dealt with on a case-by-case basis. Disabilities in this category tend to be the result of head injuries, the effects of which can be more difficult to determine. The amount of compensation awarded and the period over which it is awarded must be determined of disability percentage. For example, if it is determined that an employee has a 25 percent disability the employee might be entitled to 25 percent of the income he or she could have earned before the injury with normal career progression factored in.