“Pc” denoted the price of consumption goods and “C” indicates the consumption. “W” is the wage rate or the opportunity cost of forgoing leisure and the portion of (-R) is the number of hourly works, or labor hours (L). “M” stands for the non-labor income or unearned income. The equation can be rearranged into:
P*C + W*R = W* +m “M”, the non-labor income, divided by price of consumption (Pc), will provide us with the amount of endowment consumption, “”. Therefore, = M/pc. The equation will be P*C + W*R = W* + P*
This equation stated that the value of a consumer’s consumption plus his or her leisure has to equal to the value of endowment of consumption and the endowment of time. The right hand-side of the equation (W* +P* ) represents a person’s full income (S). In other word, it’s an amount that a person could earn if he devoted all his time to work. Through this equation of budget constraint, it’s clear that the utility maximization problem is just a standard consumer choice problem with “C” and “L” as the two commodities that can be bought in the market. The budget constraint when rewrite the equation we get:
C = + (W*)/P – (W/P)*R
The slope of budget constraint is (-W/P). The endowment is the point where they spend all hours on relaxation and do not work at all; their endowment consumption is .
P*C + W*R = W* +m
C
Endowment
Leisure
R
labor
leisure
Optimal choice consumption M/P=
C
Endowment
Leisure