According to Keynesian theory
Equilibrium Level of Income is achieved at
Full Employment Level
Under Employment Level
Over Full Employment level
It means that Aggregate demand can be equal to Aggregate Supply at all 3 levels
Resources are fully employed
Resources are not fully employed
Resources are employed more than full employment level
Lets learn about it one by one
Full Employment Level
It refers to situation where
Aggregate Demand = Aggregate Supply
when Resources are fully employed
Graph Representation
On X axis, we show Income or Output
On Y Axis, we show Demand
It can be seen that
AD is Positively Sloping Starting from Point M
AS is also Positively Sloping but starts from Point 0.
It makes an angle of 45 Degree with Origin
Point where AD and AS Curve intersect is equilibrium Point
Note
We join E and x axis at Point Q
At this point, OQ is Equilibrium level of Output
At OQ level, it is assumed that all those who are willing to work are able to get work and find employment (there is full employment)
Under Employment Level
It refers to situation where
Aggregate Demand = Aggregate Supply
when Resources are not fully employed
Graph Representation
On X axis, we show Income or Output
On Y Axis, we show Demand
We know that in case of Full Employment
AD and AS Curves normally intersect at Point E
But In case of Underemployment
Aggregate Demand Decreases from AD to AD1
Due to this ,AD1 and AS Curve met at Point F
Hence, F is equilibrium Point
We can say that in case of Underemployment, equilibrium Level shifts leftwards
Note
We join E and x axis at Point Q1
At this point,OQ1 is Equilibrium level of Output
Since OQ1 is less than OQ, it denotes resources are under employed
Over Employment Level
It refers to situation where
Aggregate Demand = Aggregate Supply
when Resources are beyond full employment level
Graph Representation
On X axis, we show Income or Output
On Y Axis, we show Demand
We know that in case of Full Employment
AD and AS Curves normally intersect at Point E
But In case of Overemployment
Aggregate Demand Increases from AD to AD1
Due to this ,AD1 and AS Curve met at Point G
Hence, G is equilibrium Point
We can say that in case of Overemployment, equilibrium Level shifts Rightwards
Note
If we join E and x axis at Point Q1
At this point,OQ1 should be Equilibrium level of Output
Hence, Output should increase beyond full employment level
This is not possible as resources are already fully employed and there is no idle capacity
This equilibrium Point is achieved by firms by increasing price of goods, not their quantities
Hence, there is no real increase in Output in this case
NCERT Questions
No questions in this part
Other Books
Question 1
What is meant by Full employment equilibrium?
View AnswerIt refers to situation where Aggregate Demand = Aggregate Supply when Resources are fully employed.
Question 2
What is meant by underemployment equilibrium?
View AnswerIt refers to situation where Aggregate Demand = Aggregate Supply when Resources are not fully employed.
Question 3
What is meant by over employment equilibrium?
View AnswerIt refers to situation where Aggregate Demand = Aggregate Supply when Resources are beyond full employment level.