Economic Principles: Income, Labor, Externalities, and Taxes

Economic Factors: Income, Wealth, and Labor Dynamics

Income and Distribution (Topic 6)

Income: Is the total income received by owners of factors of production.

Income Distribution: Is the way income is allocated among owners of factors of production in the form of salaries, rent of land, interests, and profits. Distribution depends on two main factors:

• Wage Differences: Marked differences result in a highly unequal income distribution.
• The Distribution of Wealth: When the percentage of the population with access to wealth is small, income differences within society will be larger.

Defining Wealth

Wealth: Is the net asset value, encompassing tangible (physical) and financial assets. Given the distribution of wealth, the incomes of individual economies depend on:

• The amounts of resources owned.
• The fraction of these resources brought to market.
• The selling prices achieved.

The Labor Market

Job/Labor Offer: Represents the individual willingness to work, and the number of hours worked depends on two factors:

• Individual choice between work and leisure.
• The opportunity cost of leisure time (measured by the salary per hour).

The individual supply curve shows the number of hours an individual is willing to work as the wage per hour increases. Normally, if the salary increases, the job supply increases, meaning the labor supply curve continues rising.

Factors Affecting Aggregate Labor Supply

The aggregate labor supply depends on three factors:

1. Wages.
2. Population size.
3. The rate of activity (the percentage of the population in the labor force).

Labor Demand Curve: Represents the number of persons employers are willing to hire at each salary level.

Measuring Unemployment

Unemployment Rate: Is the percentage that the total unemployed population represents of the total labor force.

$$\text{Unemployment Rate} = \frac{\text{Unemployed}}{\text{Labor Force}}$$

There are two primary types of unemployment:

1. Frictional Unemployment: Caused by normal rotation between jobs and the time spent searching for employment.
2. Structural Unemployment: Caused by other factors leading to a labor market mismatch, such as minimum wage regulations or union influence.

Market Failures and Government Intervention (Topic 7)

Externalities: Unpriced Side Effects

Externalities arise when side effects of production or consumption are not included in market prices. An externality occurs when the production or consumption of a good directly affects consumers or businesses not participating in the purchase or sale of that good, and these effects are not reflected in market prices.

Types of Externalities

• Negative Externalities: In production, the social cost of producing a polluting good exceeds the private cost. Consequently, the socially optimal amount of the good is smaller than the quantity the market produces.

• Positive Externalities: In production, the social cost is lower than the private cost of production. Consequently, the quantity produced in the market is lower than the socially optimal amount.

Taxation

Taxes: Are obligatory contributions from citizens and companies to the public sector. There are two main types:

• Direct Taxes: Levied upon income or wealth (e.g., income tax). (The original text incorrectly classified these as being on consumption.)
• Indirect Taxes: Levied upon consumption or transactions (e.g., sales tax, VAT). (The original text incorrectly classified these as being upon income.)