The first type - Wage earners, their income phase stop at age 55 or maybe 60. After retirement, they have to count their nest eggs.
The second type - Business owners, they enjoy a stream of income as long as they are in business. In their old age, they may not work as hard, they may earn less, however, they have recurring income.
The third type - This is the best type, they still earn an income after death. Their continuous income derive from copyright. A good example is Michael Jackson, he continues to earn an income for his estate after his death.