How Many Workers Should I Hire

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Presentation transcript:

How Many Workers Should I Hire How Many Workers Should I Hire? Here’s how to hire the profit-maximizing quantity of labor in a perfectly competitive labor market.

(Lots and lots of corn! Consumers like corn!) What are we producing? CORN! (Lots and lots of corn! Consumers like corn!)

How are we producing CORN? Field 1 Field 2 FIXED Seed Drill 1 Seed Drill 2 CORN CORN CORN CORN Team 1 Farmworkers Team 2 Farmworkers Variable LOAN Work Period = 30 seconds

EQ: How many farmworkers should we hire to maximize profits? What do we want to know? EQ: How many farmworkers should we hire to maximize profits? Wage = $5 per farmworker Price = $8 per bushel of corn The number of workers up to the point where MRP=MFC! Total Factor Cost = Wage per Worker X Number of farmworkers. The number of times CORN is written in 30 seconds. The additional amount of CORN produced by each additional farmworker. Total Revenue Product = Price per Bushel X Number of Bushels of CORN. Marginal Revenue Product = Price per Bushel X MPP. Marginal Factor Cost = Wage per Worker X number of additional farmworkers hired each round.

What do we need? Ready? Let’s go! Team One Team Two Worker Recorder Mathematician Team Two

Time for Math! Sample Calculation… Wage = $5 per farmworker Price = $8 per bushel of corn 10 10 $80 $5 $80 $5 Time for round 2! Each team picks an additional farmworker.

Time for Math! Sample Calculation… Wage = $5 per farmworker Price = $8 per bushel of corn 10 $80 $5 14 4 $112 $10 $32 $5 Time for round 3! Each team picks an additional farmworker.

Time for Math! Sample Calculation… Wage = $5 per farmworker Price = $8 per bushel of corn 10 $80 $5 14 4 $112 $10 $32 $5 15 1 $120 $15 $8 $5 Time for round 4! Each team picks an additional farmworker.

Time for Math! Sample Calculation… Wage = $5 per farmworker Price = $8 per bushel of corn 15 1 $120 $15 $8 $5 10 $80 $5 10 $80 $5 14 4 $112 $10 $32 $5 14 4 $112 $10 $32 $5 > < 15 $120 $20 $0 $5 Do we need to run round 5?

Determining Returns to Scale Round 2 Round 1 Field 1 Field 2 Seed Drill 1 Seed Drill 2 CORN CORN CORN CORN Team 1 Farmworkers Team 2 Farmworkers LOAN Labor and capital increased by 100% in round 2. Did output increase by 100%, more than 100%, or less than 100%? Work Period = 30 seconds

ATC = (Wage X # of workers) + (Rent X # of drills) Returns to Scale Essential Question Two: Are the returns to scale for a firm increasing, decreasing, or constant when doubling the quantity of labor and capital used in production? Wage = $5 per farmworker Rent per seed drill = $10 15 34 It is increasing; output more than doubles when labor and capital are doubled and average total cost falls from $1.00 per bushel to $0.88. ATC = (Wage X # of workers) + (Rent X # of drills) # of units of output

National Standards in Economics Students will understand that: - Effective decision making requires comparing the additional costs of alternatives with the additional benefits. Many choices involve doing a little more or a little less of something. Few choices are “all or nothing” decisions. Benchmarks: Grade 8 At the completion of Grade 8, students will know the Grade 4 benchmarks for this standard and also that: - to determine the best level of consumption of a product, people must compare the additional benefits with the additional costs of consuming a little more or a little less. - marginal benefit is the change in total benefit resulting from an action. Marginal cost is the change in total cost resulting from an action. - as long as the marginal benefit of an activity exceeds the marginal cost, people are better off doing more of it; if the marginal cost exceeds the marginal benefit, they are better off doing less of it. Benchmarks: Grade 12 At the completion of Grade 12, students will know the Grade 4 and Grade 8 benchmarks for this standard and also that: - to produce the profit-maximizing level of output and hire the optimal number of workers and other resources, producers must compare the marginal benefits and marginal costs of producing a little more with the marginal benefits and marginal costs of producing a little less.