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7. Consider an economy in which the marginal product of labor MPN is MPN=284-2N where N...

7. Consider an economy in which the marginal product of labor MPN is MPN=284-2N where N is the amount of labor used. The amount of labor supplied, NS, is given by NS=22+12w+2T, where w is the real wage and T is a lump-sum tax levied on individuals.

a)      Use the concepts of income effect and substitution effect to explain why an increase in lump-sum taxes will increase the amount of labor supplied.

b)      Suppose that T=25. What are the equilibrium values of employment and the real wage?

c)       With T remaining equal to 35, the government passes minimum-wage legislation that requires firms to pay a real wage greater than or equal to 7. What are the resulting values of employment and the real wage?

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Q7)

a) If the limp-sum taxes will increase. There will be an income effect on labour supply, not a substitution effect(since the real wage will not change). An increase in the lump-sum tax will reduce a worker's wealth, so labour supply will increase.

b) Given, MPN = 284 - 2N, NS = 22 + 12W + 2T

If T = 25. Then

NS = 22 + 12W + (2*25)

NS = 72 + 12W

Labour demand is given by W = MNP = 284 -2N, or 2N = 284 -W, so N = 142 - W/2

Setting labour supply equal labour demad gives,

72 + 12W = 142 -W/2

or, 12W + W/2 = 142 - 72

or, 25W/2 = 70

or, 25W = 140

or, W = 140/25

or, W = 5.6

with W = 5.6,

N = 72 + 12(5.6)

N = 139.2

c)

NS = 92+ 12 (w) 02-+62 IL T-35 then NSE 23+ (2x35) + 12W =92 + 12 W Labau demand is given by W= MNP 284-2N ar 2N = 284-w ar,

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