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Production, Cost & Organisation
Bino Paul, Tata Institute of Social Sciences
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Firm & Production
• Transformation of input into output
•Output: Final commodity, Intermediate product, Service
• Production is a flow (rate of output over a given period of time)
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Value Addition and
Production Function
X = Q – R
X = value addition, Q = Output, R = Raw Materials
Q = f (K, L, LA, O, R)
K = Capital, L = Labour, LA = Land,O = Organization, R = Raw material
X = f (K, L, LA, O)
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Inputs
Factor Inputs Non Factor Inputs
K
L
LA
O
R
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Law of Return
X = f (L);
X = Net Value Added
L = Labour
Other factors are kept constant.
TP = Total ProductMP = TP/ L
AP = TP/L
Labour TP MP AP
1 10 10
2 22 12 11
3 36 14 12
4 48 12 12
5 57 9 11.4
6 63 6 10.5
7 67 4 9.57
8 67 0 8.38
9 65 -2 7.22
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-10
0
10
20
30
40
50
60
70
80
0 2 4 6 8 10
T P , M
P , A P
Units of Labour
TP
MP
API
II
III
AP = MP
MP = 0
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Output Elasticity & Returns
Relation Between
AP and MP
Output Elasticity
=( TP/ TP)/( L/L)
= ( TP/ L)/ (TP/L)
= MP/AP
MP > AP > 1
[INCREASING RETURNS]
MP = AP 1
[CONSTANT RETURNS]
MP < AP < 1
[DIMINISHINGRETURNS]
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Technical Change
TP
L
TP1
TP2
TECHNICALPROGRESS
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Technical Change
TP
L
TP2
TP1
TECHNICALREGRESS
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Process
A process is a way of
combining of factor inputs.In formal language, it is a
vector of inputs
Process 1 Process 2 Output
Column (1)* Column (2)*
Capital (K) 5 3 100 units
Labour (L) 2 4 100 units
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Process & Technical Efficiency
Technical efficiency (TE) of
a process implies that
minimum use of inputs for
a given output.
Processes 1 and 2 are
technically efficient, but
process 3 is inefficient,
and it is inferior to other
processes
Technical Efficiency and a Comparison of
Processes
Process
1
Process
2
Process
3
Output
Capital
(K)
5 3 6 100
units
Labour
(L)
2 4 5 100
units
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Technical efficiency
A is Technically efficient.
B is technically inefficient.
A
B
TP
L
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ISO-QUANT and Total Product Map
K
6 10 22 29 34 38 39
5 12 26 34 38 40 38
4 12 26 34 38 38 34
3 10 22 31 34 34 30
2 7 17 26 28 28 261 3 8 12 14 14 12
L 0 1 2 3 4 5 6
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Iso-Quant
• ISO-Quant is a set oftechnically efficientprocesses.
• On Iso-Quant, TP
remains same (i.e. TP
= 0)
L
TP
K
K
LK
L
TP
TP
K
L
Convex Iso-Quant
LP Iso-QuantInput-Output Iso-Quant
Linear Iso-Quant
TP
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Properties of Technology
•
Monotonic
• Convex
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Monotonic function
If the amount of at least one input is increased,it should be possible to produce at least as much
output as produced originally.
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Convex Technology
Let processes (K 1, L1 ) and (K 2, L2 ) generate 1 unit
of output apiece.
So, (100 K 1, 100 L1 ) 100 (100 K 2, 100L2 )
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Convex Technology
Weighed average of processes produce 100 units
2L 4L
10 K
5K
(0.25 * 5K + 0.75 *10K),
(0.25 * 2L + 0.75 *4L)
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Marginal Products
Let Y = f(X 1, X 2 )
Y/X 1 = {f(X 1+X 1, X 2 ) – f(X 1, X 2 )} /X 1
Y/X 1 = Marginal Product of Factor 1 =MP1
Y/X 2 = {f(X 1, X 2 +X 2 ) – f(X 1, X 2 )} /X 2
Y/X 2 = Marginal Product of Factor 2=MP2
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Technical Rate of Substitution (TRS)
Y = MP1 X 1 + MP2 X 2 = 0
TRS =X 2/X 1 = MP1/MP2
Diminishing TRS
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The long run and the short run
• In the short run, there will be at least one factor
of production that is fixed at pre determined
level
•
In the long run, all the factors of production vary.
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Returns to Scale
Scale: Increase all inputs by a constant
Let Y = f(X 1, X 2 ). Increase X 1 and X 2 by 2 each; f( 2X 1, 2X 2 ).
Supposing we get 2Y = f( 2X 1, 2X 2 ), Constant Returns to Scale
Let Y = f(X 1, X 2 ). Increase X 1 and X 2 by 2 each; f( 2X 1, 2X 2 ).
Supposing we get 1.5Y = f( 2X 1, 2X 2 ), Diminishing Returns to Scale
Let Y = f(X 1, X 2 ). Increase X 1 and X 2 by 2 each; f( 2X 1, 2X 2 ).
Supposing we get 4Y = f( 2X 1, 2X 2 ), Increasing Returns to Scale
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Cobb Douglas Production Function
Let Y = Value Added, X 1 and X 2 are factor inputs
Y = f ( X 1, X 2 ) = A X 1a X 2
b
A = Scale of Production
a, b
How much output we would get if we
used one unit of each input
How the amount of output responds to
change in input
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Measuring Capital (K)
It = K t-K t-1; K t = It + K t-1; I = Investment, d = rate of depreciation
K 1 = I1 + K 0 (1-d)
K 2 = I2 + K 1 (1-d) = I2 + (I1 + K 0(1-d)) (1-d)
= I2 + I1 (1-d) + K 0 (1-d)2
K 3 = I3 + K 2 (1-d)
= I3 + [I2 + I1 (1-d) + K 0 (1-d)2 ](1-d)
= I3 + I2 (1-d) + I1 (1-d)2 + K 0 (1-d)3
K 4 = I4 + K 3 (1-d)= I4 + [I3 + I2 (1-d) + I1 (1-d)2 + K 0 (1-d)3 ] (1-d)
= I4 + I3 (1-d) + I2(1-d)2 + I1(1-d)3 + K 0 (1-d)4
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Marginal Products (MP)
Y = f( X 1, X 2 ) = A X 1a X 2
b
MP1 = δ Y/δX 1 = a A X 1a-1 X 2
b
MP 2 = δ Y/δX 2 = b A X 1a X 2b-1
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TRS
Y =A X 1a
X 2b
X 1
X 2 TRS = MP1/MP2 = (a A X 1
a-1 X 2b )/(b A X 1
aX 2b-1 )
=(a/b) (X 2/X 1 )
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An exercise
Year
Number of
Persons
Investment
at constant
prices depeciation Capital
Output at
Constant
Prices
Output
Index
Capital
Index
Labour
Index lnoutput lncapital lnlabour
1.00 5.00 0.05 10.00 0.70 100.00 100.00 100.00 4.61 4.61 4.61
2.00 5.00 1.50 0.05 11.00 1.20 171.43 110.00 100.00 5.14 4.70 4.61
3.00 7.00 1.30 0.05 11.75 1.40 200.00 117.50 140.00 5.30 4.77 4.94
4.00 8.00 1.70 0.05 12.86 1.50 214.29 128.63 160.00 5.37 4.86 5.08
5.00 10.00 2.00 0.05 14.22 1.55 221.43 142.19 200.00 5.40 4.96 5.30
6.00 12.00 2.10 0.05 15.61 1.67 238.57 156.08 240.00 5.47 5.05 5.48
7.00 15.00 2.20 0.05 17.03 1.80 257.14 170.28 300.00 5.55 5.14 5.70
8.00 16.00 2.50 0.05 18.68 1.90 271.43 186.77 320.00 5.60 5.23 5.77
9.00 17.00 2.70 0.05 20.44 2.00 285.71 204.43 340.00 5.65 5.32 5.83
10.00 18.00 2.80 0.05 22.22 2.50 357.14 222.21 360.00 5.88 5.40 5.89
11.00 19.00 3.00 0.05 24.11 2.65 378.57 241.10 380.00 5.94 5.49 5.94
12.00 20.00 3.40 0.05 26.30 2.80 400.00 263.04 400.00 5.99 5.57 5.99
13.00 21.00 3.30 0.05 28.29 2.83 404.29 282.89 420.00 6.00 5.65 6.04
14.00 21.00 4.80 0.05 31.67 2.96 422.86 316.74 420.00 6.05 5.76 6.04
15.00 22.00 4.95 0.05 35.04 3.30 471.43 350.41 440.00 6.16 5.86 6.09
16.00 23.00 5.00 0.05 38.29 3.45 492.86 382.89 460.00 6.20 5.95 6.13
17.00 24.00 5.40 0.05 41.77 3.56 508.57 417.74 480.00 6.23 6.03 6.17
18.00 25.00 4.80 0.05 44.49 3.57 510.00 444.86 500.00 6.23 6.10 6.21
19.00 25.00 5.60 0.05 47.86 3.89 555.71 478.61 500.00 6.32 6.17 6.21
20.00 26.00 5.90 0.05 51.37 4.50 642.86 513.68 520.00 6.47 6.24 6.25
21.00 27.00 8.00 0.05 56.80 4.60 657.14 568.00 540.00 6.49 6.34 6.29
22.00 28.00 8.20 0.05 62.16 4.70 671.43 621.60 560.00 6.51 6.43 6.33
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Ordinary Least Square (OLS)Regression of Production Function
Y = f( K, L) = A K a Lb
In Y t = In A + a In K t + b In Lt + ut
Dependent Variables: Y (output),
Independent Variables: K (capital), L (Labour)Random Variable: u (error)
Parameters/Coefficients: A (factor that explains variation emanating neither from capital nor from labour);a (proportionate change in Output divided by proportionate change in Capital);b (proportionate change in Output divided by proportionate change in Labour)
ln: Natural Logarithm; Subscript ‘t’ : Time
From the data: ln Y t = 0.86 + 0.56 In K
t + 0.33 In L
t Y = 2.4 K 0.56 L 0.33
All the coefficients/parameters are statistically significant
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Cost
C = w 1X 1 + w 2X 2, C = Cost, w 1= Unit compensation to X 1 w 2= Unit compensation to X 2
Slope = maxX 2/maxX 1= w 1/w 2
X 1
X 2
If X 1= 0,
then
max X 2 =C/w 2
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Equilibrium
Y =A X 1a
X 2b
X 1
X 2 TRS = MP1/MP2 = (a/b) (X 2/X 1 )
MP1/MP2=(a/b) (X 2/X 1 ) = w 1/w 2MP1/w 1=MP2/w 2
C= w 1x1+w 2x2
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Returns to Scale
Let f(X 1, X 2 ) = A X 1aX 2
b becomes f( 2X 1, 2X 2 ) = A (2X 1 )a (2X 2 )
b
= 2a+b A X 1a X 2
b
= 2a + b Y
a + b = ? Returns to Scale
1 Constant Returns to Scale
>1 Increasing Returns to Scale
< 1 Diminishing Returns to Scale
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Profit Function
Set of Outputs = {y 1……y n}
Set of Inputs = {x1……xn}
Set of Prices = {p1……pn}Price of Inputs = {w 1…… w n}
π = ∑i =1….n pi y i - ∑ i =1….n w i x i ; π = Economic Profit
Value all inputs and outputs at their opportunity costs
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Organization of Firms
Firm
Proprietorship
Partnership
Corporation
(independence between owner andmanager)
Maximizing the present vale of the stream of
profits the firm generates
Should firm
outsource or
internalise
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Fixed and Variable Factors
If the input varies with the
output
Type of inputs
NO (input remains fixed evenat zero output)
Fixed
YES Variable
NO except at zero output Quasi Fixed
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Short run vs. Long run
Long Run When all the factors of
production vary
Short Run When at least one factor ofproduction is fixed
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Short run profit maximisation
Let Set of Outputs = {y}; Set of Inputs = {x1,x*2}; Set of Prices = {p};
Price of Inputs = {w 1, w 2}; π = Economic Profit
x1 = Variable factor x*2 = Fixed Factor
π = py – (w 1x1+w 2x*2 )
π/p = y – (w 1x1/p) – (w 2x*2/p) ; y = π/p + (w 1x1/p) + (w 2x*2/p)In the above equation, while y and x1 are variables, rest are constants.
Therefore, there will be different combinations of y and x1 that correspond to a
fixed π .
RevenueCost
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Profit maximizing output (Short run)
Given y = f(x1, x*2 )
y = π/p + (w 1x1/p) + (w 2x*2/p)
Production function/Technology
Iso Profit
Iso Profit
Production function/Technology
Y
X1
Profit maximizing
output
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Comparative statics
Slope of Iso profit = Y/X 1 = w 1/p
Slope of production function = Y/X 1 = Marginal Product of X 1. At the equilibrium = w 1/p = Marginal Product of X 1.
What happens if w 1 increases …..
Higher w 1
Lower w 1
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Comparative statics
Slope of Iso profit = Y/X 1 = w 1/p
Slope of production function = Y/X 1 = Marginal Product of X 1. At the equilibrium = w 1/p = Marginal Product of X 1.
What happens if p increases …..
Lower p
Higher p
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Long run profit maximization
Let Set of Outputs = {y}; Set of Inputs = {x1,x2}; Set of Prices = {p};
Price of Inputs = {w 1, w 2}; π = Economic Profit
x1 = Variable factor x2 = Variable Factor
π = py – (w 1x1+w 2x2 )
Since y = f(x1, x2 ), π = pf(x1, x2 ) – (w 1x1+w 2x2 )
δ π/ δx1 = p ( δy/ δx1 )- w 1 = 0δ π/ δx2 = p δy/ δx2 )- w 2 = 0
p MP1 = w 1
p MP2 = w 2
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Cost
Cost {C(y)}; C(y) = F + C v (Y)
Fixed Cost
F
Variable Cost
C v (Y)
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Average Cost
Average Cost {AC(y)};
AC(y) = (F/Y) + (C v (Y)/Y)
Average Fixed Cost
F/Y
Average VariableCost
C v (Y)/Y
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AFC, AVC, and AC
Y
AFC
Y
AVC AC=
AFC+AVC
Y
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Marginal Cost (MC)
MC (y) =C(y)/ Y
=(c(Y+ Y) – c(Y))/ Y
MC(y)
=C v
(Y)/ Y
= [C v (Y+ Y)- C v (Y)]/ Y
C v = Variable Cost
MC(1) = [C v (1) + F – C v (0) – F]/1 = C v (1)/1 = AVC(1)
MC(2) = [C v (2) + F – C v (1)-F)/1
MC(3) = [C v (3) + F – C v (2)-F)/1
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Average Cost (AC), Average Variable Cost (AVC)
and Marginal Cost (MC)
AC
AVCMC
AC, AVC,
MC
Y
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Relation between Average Cost (AC) andMarginal Cost (MC)
Let C = Total Cost and Y = Output
Supposing AC reaches minimum
d(C/Y)/dY = [Y (dC/dY) – C]/Y 2
= 0; Y 2
not equal to Zero
dC/dY = C/Y ; dC/dY = MC; C/Y = AC
AC = MC
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Long Run Average Cost
AC
Y
Long run AC
Short run AC
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Profit Maximizing Output
For an output to be profit maximizing:
Necessary condition: Marginal Revenue (MR) = Marginal Cost (MC)
Sufficient Condition: MC/ Y exceeds MR/ Y
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Revenue and Market Structure
Market
Structure
Average
Revenue (AR)
Marginal
Revenue (MR)
PerfectCompetition
(pY)/Y = p;p is determined by marketforces. Firm has only negligiblestake in price determination
(pY) = p Y + Y p
(pY) / Y = p + Y ( p/ Y)
Since
p = 0,
(pY) /
Y = p
MR = AR
ImperfectCompetition(Monopoly, Monopolisticcompetition, Oligopoly)
(pY)/Y = p;p is determined by the firm onthe basis of demand. Forexample, p = a - b Y
(pY) = p Y + Y p
(pY) / Y = p + Y ( p/ Y)
AR tends to exceed MR since( p/ Y) carries negative sign
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Decision making in perfect competition
P r i c e
Demand/Supply
A v e r a g e C o s t
( A C ) / M a r g i n
a l C o s t
( M C )
Output
AC
MC
Average
Revenue =Marginal
Revenue= Price
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Decision making in imperfect competition
(monopoly)
AR = Average Revenue
MR = Marginal Revenue
AC= Average Cost
MC = Marginal Cost
AR=Price
AR
MR
MC
AC
AR,
MR,
AC, MC
Output
Super
normal Profit
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Adam Smith….
• Division of Labor
• Scale of Production
• Self Interest as a coordinating force
• Exchange in an Economy
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Stigler….
• Disintegration of activities
• Integration of activities
Process 2
Process 1
Process 3
Process 4
Output
AverageCost
Can Process 3 be
transformed to a new
industry?
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Coordination in Economy
There are two major coordinating forces
Price
Entrepreneur
These forces direct resources, goods
and so on.
Price & Entrepreneur
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Price & Entrepreneur
Price
Capital Labour
Land
CapitalLabour
Land
Entrepreneur
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Firm
Coase (1937)
Firm = f (Cost of Using Price Mechanism)
Let
F = Likelihood of firm,
C = Cost of Using Price Mechanism
F = f (C)
F
C
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Cost of Using Price Mechanism
Cost of
Using
Price
Mechanism
Discovering
Relevant
Prices
Cost of
Contract
= +
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Two Relations
Desirability of
Specifying
Expectations
Duration
of
Contract
Likelihood
Of Firm
Desirability of
Long Term
Contract
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Firm and its Size
Volume of Organizing the Transaction
Marginal Cost ofOrganizing
Transaction(MCO) /Marginal Cost ofExchange throughMarket (MC)
Firm’s Size
MCO
MC
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Efficiency & Organization
Efficiency in
Terms of
Factor Use
Volume of Organizing Transaction
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A review of “The modern corporation: origins,
evolution, attributes” by Oliver E Williamson
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Theory of firms and markets
Firm as a production function
Ronald Coase (1937): Transaction cost
Arrow (1969): cost of running economic system
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Organization Theory
Herbert Simon (1947): Bounded rationality
Cognitive limits
Memory
Non Standard Business practices
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p
Is the non standard business practices anti competitive oreconomising of resources?
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Business History
Lance Davis and North (1971)
Institutional change
Chandler (1962, 1977)
Organisational form and performance
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Transaction cost
Ex ante cost : negotiating and writing
Ex post cost: executing, policing and remedying
Production function frame work may cover cost of planning,adapting and monitoring under alternative governance structures
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Transaction cost: behavioural assumptions
Bounded rationality
Opportunism ( moral hazard )
“assess alternative governance structures in terms of their capacities
to economise on bounded rationality while simultaneouslysafeguarding transactions against opportunism”
Is transaction important in economics of
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Is transaction important in economics of
organizations
Frequency of transaction
Uncertainty to which transactions are subject to
Specific investments to support transactions
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Asset Specificity
Site specificity: to economise inventory and transportationcost
Physical asset specificity: special inputs to producecomponents
Human asset specificity: learning-by-doing
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Asset specificity
Lock in
Organisational design:
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three principles
Asset-specificity principle
Externality Principle ( free riding )
Hierarchical decomposition principle
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Advantages of procurement through market
If firm needs are small in relation to small
(static economies of scale)
Market can aggregate uncorrelated demands
(risk pooling benefits)
Economies scope
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Asset specificity principle
“recurring transactions for technologically separable goods and services will be efficiently
mediated by autonomous market contracting is progressively weakened as assetspecificity increases”
Asset specificity Less transferable to other uses
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Situation Nature of Assetspecificity
Classical market Assets non specific to
partnersBilateral or obligationalmarket contracting
Semi specific
Internal organisation High specific
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Externality Principle
In the distributional stage, there is information asymmetry onquality (enhancement or debasement)
Autonomous contracting will be replaced by obligational
contracting (franchising)
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Heirarchical Decomposition
Operating Parts (high frequency; short run dynamics)
Strategic Parts (Low frequency; long run dynamics)
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19th Century Corporation
Rail road
Forward Integration
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Integrationclass
Economies ofscope
externalities AssetSpecificity
none considerable negligible negligible
minor some some Negligible
wholesale uncertain Some Some
Retail Negligible some considerable
20 h i
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20th century corporation
Unitary structure
(less integration)
versus
M form (du Pont and Sloan) [Multi-divisional structure]
(semi-autonomous units; miniature capital markets)
Conglomerates, Multi National Enterprises
Level Frequency Purpose
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q y
(Years)
p
Embeddedness,
Informal Institutions, Traditions,Norms, Religion
102 to 103
Often non calculative,
spontaneous
Institutional Environment;Formal rules of the game-
especially property (polity,judiciary, bureaucracy)
10 to 102 Get the institutionalenvironment right. 1st order
economizing
Governance: play of thegame – especially contractaligning governancestructures with transactions
1 to 10
Get the governancestructures right: 2nd ordereconomizing
Resource allocation andemployment (prices &quantities; incentivealignment)
Continuous Get the marginal conditionsright. 3rd order economizing
Social Theory
Economics of Property
Rights, Positive PoliticalTheory
Transaction Cost Economics
Neoclassical Economics
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Simple contracting Schema
Unassistedmarket
h=0
Unrelievedhazards
h > 0 & s = 0
h > 0 & s > 0
Credible Commitment Integration
h = Contractual hazard, s = Safeguard
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Thanks