a) Definition of income: For those with salaries (employees [white collar] or manual laborers), income is the total sum of the money obtained by one person in all of the work completed, part or full-time, [p. 124] in any condition and that was made during the last month in one or more jobs or employments. Daily income and salary includes the "gross income", not excluding any of the deductions and contributions such as: tax deductions, Social Security, etc. Also included are: tips, commissions, pay per job, bonuses, and profit sharing if received by the employee in addition to the daily pay, wage, or salary.

b) Some type of incomes:

1. Pay per job: Money received from work completed at a specific rate per job/task.

2. Commissions: Money received through a business transaction completed for another person.

3. Tips: Payment received as a compliment to a daily wage, received for service provided to a client.

4. Bonuses: Payments made by employers to employees as a supplement to daily wages and salaries; for example, for services based on a percentage of profits.

5. Wage or salary: Wage or Salary obtained as an employee [white collar] or manual laborer of the government or of a private enterprise.

c) Using the same concepts of income from the previous paragraph, ask those who are unemployed what their monthly income was in their last job.

d) Combined incomes:

Try to find out if the person marked as an employee in question 30 received additional income from one or more secondary jobs on own-account. This income, along with any other special payments, should be added to the amount declared. The most common case is that of an employee [white collar] or manual laborer of the government or of a private enterprise that obtains a principal income and additionally completes work on his/her own-account. Such is the case with doctors, dentists, lawyers, nurses, professors in any specialty, street peddlers, etc., and any other non professional persons in a similar situation.