Question
1. Consider the OLG model with the following specifications: Let the utility of household i of cohort t be u(ci t(t); ci t(t + 1))
1. Consider the OLG model with the following specifications:
Let the utility of household i of cohort t be
u(ci
t(t); ci
t(t + 1)) =
q
ci
t(t) +
q
ci
t(t + 1)
where 0 < < 1.
Preferences are the same across individuals and across generations.
Also, let Y (t) = K(t)H(t)1:
The depreciation rate is 100%: = 1.
Questions
a Find the function G where
K(t + 1) = G(K(t)):
(Show your work.)
Additional specifications: Let us make the following assumptions:
There is no population growth: N(t + 1) = N(t) 8t.
Each young person in the economy works for hy = 10 hours, while each old person
works for ho = 5 hours:
hi
t =
hi
t(t); hi
t(t + 1)
= [hy; ho] = [10; 5]; 8(i; t):
Let = 0:8, = 0:5 and K(0) = 0:25.
b) Find K(1).
c) Calculate Y (1) using the income and expenditure approaches.
d) Suppose that due to the public health measures, the labor endowment of old
people h0 is increased starting from t = T. Using the model, discuss how this
change will affect the steady state wage w and consumption of young and old
workers cy and co. Explain why these changes occur.
1
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