does management matter: evidence from india nick bloom (stanford) benn eifert (berkeley) aprajit...
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Does management matter:evidence from India
Nick Bloom (Stanford)Benn Eifert (Berkeley)
Aprajit Mahajan (Stanford)David McKenzie (World Bank)John Roberts (Stanford GSB)
LSE/UCL seminarMarch 1st 2010
We thank the Freeman Spogli Institute, the International Growth Centre,
the Kauffman Foundation, the Murty Family, and World Bank for funding
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2.6 2.8 3 3.2 3.4mean of management
USGermanySweden
JapanCanadaFrance
ItalyGreat Britain
AustraliaNorthern Ireland
PolandRepublic of Ireland
PortugalBrazilIndia
ChinaGreece
2
Management appears worse in developing countries
Average country management score, manufacturing firms 100 to 5000 employees(monitoring, targets and incentives management scored on a 1 to 5 scaleusing the methodology developed in Bloom & Van Reenen (2007, QJE))
69533627012234431218876238292231102140
524171
620559
# firms
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3Firm-Level Management Scores
0.2
.4
.6
.8
De
nsity
1 2 3 4 5management
0.2
.4
.6
.8
De
nsity
1 2 3 4 5management
US manufacturing, mean=3.33 (N=695)
Indian manufacturing, mean=2.69 (N=620)
India’s low score is due to a tail of badly managed firmsD
en
sity
De
nsi
ty
Firm level histograms underlying the country averages from the last figure
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4
This raises two obvious questions
1. Does “bad” management really reduce productivity, or are Indian firms differently managed because, for example, wages are low?
2. If it does matter, why are so many Indian firms badly managed?
Also, links to a long literature in social science on the importance of management, from the earliest work on profit spreads (e.g. Walker, 1887) to recent work on productivity spreads (e.g. Syversson, 2010)
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SummaryExperiment on plants in large (≈ 300 person) Indian textile firms
Randomized treatment plants get heavy management consulting, controls plants get very light consulting (just enough to get data)
Collect weekly performance data on all plants from 2008 to 2010
• Improving management practices led to large increases in productivity and profitability
• Reasons for bad management are informational (firms not aware of modern practices), and CEO capabilities & behavior
Before I show any data would like to show some photos of the plants to give context to the results
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But before the photos, I want to note that this is not a cost-benefit evaluation of management consulting
We hire consultants as a practical mechanism to achieve an improvement in management practices.
Our findings suggest a large impact of this in the treatment plants, but much less impact in the control plants.
Assessing the cost-benefit for both groups depends on a number of assumptions around long-run output and cost impacts, open market consulting costs, discount rates, and rival firm copying.
We have not done this, and it is not the focus of the paper.
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Exhibit 1: Plants are large compounds, often containing several buildings.
Plant surrounded by grounds
Front entrance to the main building Plant buildings with gates and guard post
Plant entrance with gates and a guard post
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Exhibit 2: The plants operate 24 hours a day for 7 days a week producing fabric from yarn, with 4 main stages of production
(1) Winding the yarn thread onto the warp beam (2) Drawing the warp beam ready for weaving
(3) Weaving the fabric on the weaving loom (4) Quality checking and repair
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Exhibit 3: Many parts of these Indian plants were dirty and unsafe
Garbage outside the plant Garbage inside a plant
Chemicals without any coveringFlammable garbage in a plant
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Exhibit 4: The plant floors were disorganized
Instrument not
removed after use, blocking hallway.
Tools left on the floor after use
Dirty and poorly
maintained machines
Old warp beam, chairs and a desk
obstructing the plant floor
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Yarn piled up so high and deep that access to back
sacks is almost impossible
Exhibit 5: The inventory rooms had months of excess yarn, often without any formal storage system or protection from damp or crushing
Different types and colors of
yarn lying mixed
Yarn without labeling, order or damp protection
A crushed yarn cone, which is unusable as it leads to
irregular yarn tension
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No protection to prevent damage and rustSpares without any labeling or order
Exhibit 6: The spare parts stores were also disorganized and dirty
Shelves overfilled and disorganizedSpares without any labeling or order
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Exhibit 7: The path for materials flow was often heavily obstructed
Unfinished rough path along which several 0.6 ton warp beams were taken on wheeled trolleys every day to the elevator, which led down to the looms.
This steep slope, rough surface and sharp angle meant workers often lost control of the trolleys. They
crashed into the iron beam or wall, breaking the trolleys. So now each beam is carried by 6 men.
A broken trolley (the wheel snapped off)
At another plant both warp beam elevators had broken down due to poor maintenance. As a result teams of 7 men carried several warps
beams down the stairs every day. At 0.6 tons each this was slow and dangerous
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0.2
.4
.6
.8
De
nsity
1 2 3 4 5management
14Management scores (using Bloom and Van Reenen (2007) methodology)
Brazil and China Manufacturing,
mean=2.67
0.2
.4
.6
.8
De
nsity
1 2 3 4 5management
0.2
.4
.6
.8
1
De
nsity
1 2 3 4 5management
0.5
11
.5
De
nsity
1 3 5management
Indian Manufacturing,
mean=2.69
Indian Textiles, mean=2.60
Experimental Firms, mean=2.60
These firms appear typical of large manufacturers in India, China and Brazil
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Management practices before and after treatment
Performance of the plants before and after treatment
• Quality
• Inventory
• Operational efficiency
Why were these practices not introduced before?
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The experiment used consulting to randomly change management practices
• Obtained details of the population of 529 woven cotton fabric firms (SIC 2211) near Mumbai with 100 to 5000 employees.
• Selected 66 firms in the largest cluster (Tarapur)
• Contacted every firm: 34 willing to participate straight-away, so randomly picked 20 plants from these 17 firms
• A team of 6 consultants from Accenture, Mumbai was hired to help improve the practices in some of these firms• Control: 1 month of diagnostic• Treatment: 1 month diagnostic + 4 months implementation
• Collecting data from April 2008 to December 2010
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Sample of firms we worked with
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Our plants are large by Indian and US standardsSource: Hsieh and Klenow, 2009
Average size of our plants
Employment weighted size distributions, workers per plant
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Intervention aimed to improve 38 core textile management practices in 6 areas
Targeted
practices in 6
areas:
operations,
quality,
inventory,
loom planning,
HR and sales
& orders
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Intervention aimed to improve 38 core textile management practices in 6 areas
Targeted
practices in 6
areas:
operations,
quality,
inventory,
loom planning,
HR and sales
& orders
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.2.3
.4.5
.6
2008.25 2008.5 2008.75 2009 2009.25 2009.5 2009.75ym
January 2009 April 2009 July 2009October 2008July 2008 October 2009April 2008 January 2010
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Adoption of these 38 management practices did rise, and particularly in the treatment plants
Notes: Non-experiment plants are other plants in the wave 2 treatment firms that were not involved in the experiment. They improved practices because the firms internally copied these over. All initial differences not statistically significant (Table 2)
Wave 1 treatment plants: Diagnostic September 2008, implementation began October 2008
Control plants:Diagnostic July 2009
Wave 2 treatment plants: Diagnostic April 2009, implementation began May 2008
Non experiment plants (plants in wave 2 firms with no intervention)
Sha
re o
f the
38
man
agem
ent p
ract
ices
ado
pted
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Management practices before and after treatment
Performance of the plants before and after treatment
• Quality
• Inventory
• Operational efficiency
Why were these practices not introduced before?
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Poor quality meant 19% of manpower went on repairs
Workers spread cloth over lighted plates to spot defectsLarge room full of repair workers (the day shift)
Defects lead to about 5% of cloth being scrappedDefects are repaired by hand or cut out from cloth
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Previously mending was recorded only to cross-check against customers’ claims for rebates
Defects log with defects not recorded in an standardized format. These defects were recorded solely as a record in case of customer complaints. The data was not aggregated or analyzed
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2525
Now mending is recorded daily in a standard format, so it can analyzed by loom, shift, design & weaver
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The quality data is now collated and analyzed as part of the new daily production meetings
Plant managers now meet
regularly with heads of
quality, inventory, weaving,
maintenance, warping etc.
to analyze data
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05
01
00
15
0
-20 -10 0 10 20 30 40timing
Figure 3: Quality defects index for the treatment and control plants
2.5th percentile
Control plants
Treatment plants
Weeks after the start of the intervention
Qu
alit
y d
efec
ts in
dex
(h
igh
er s
core
=lo
wer
qu
alit
y)
Start of Diagnostic
Start of Implementation
Average (+ symbol)
97.5th percentile
Average (♦ symbol)
2.5th percentile
97.5th percentile
End of Implementation
Notes: Average quality defects index, which is a weighted index of quality defects, so a higher score means lower quality. Plotted for the 14 treatment plants (+ symbols) and the 6 control plants (♦ symbols). Values normalized so both series have an average of 100 prior to the start of the intervention. Confidence intervals from plant block bootstrapped.
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Estimating management effect in regressions
(A) OLS: plant FEs and weekly time dummies
Outcomei,t=αi+ λt + βmanagementi,t + vi,t
(B) IV: 2nd stage as above, 1st stage instruments management
Managementi,t=αi+ λt + β1(Intervention weeks)i,t + β1(Intervention weeks)2i,t +
ei,t
(C) ITT: regress on outcome on intervention
Outcomei,t=αi+ λt + βinterventioni,t + vi,t
All standard errors bootstrapped clustered at firm level
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29Data is weekly at the plant level. Standard errors are boostrap clustered at the firm level.
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Management practices before and after treatment
Performance of the firms before and after treatment
• Quality
• Inventory
• Operational efficiency
Why were these practices not introduced before?
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Stock is organized, labeled, and entered
into an Electronic Resource Planning (ERP) system which
has details of the type, age and location.
Bagging and racking yarn reduces waste
from rotting (keeps the yarn dry) and crushing
Computerized inventory systems
help to reduce stock levels.
Organizing and racking inventory enables firms to substantially reduce capital stock
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Sales are also informed about excess yarn stock so they can incorporate this in new designs.
Shade cards now produced for all
surplus yarn. These are sent to the design team in
Mumbai to use in future products
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33Data is weekly at the plant level. Standard errors are boostrap clustered at the firm level.
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Management practices before and after treatment
Performance of the firms before and after treatment
• Quality
• Inventory
• Operational efficiency
Why were these practices not introduced before?
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Many treated firms have also introduced basic initiatives (called “5S”) to organize the plant floor
Worker involved in 5S initiative on the shop floor, marking out the area
around the model machine
Snag tagging to identify the abnormalities on & around the machines, such as
redundant materials, broken equipment, or accident areas. The operator and the maintenance team is responsible for
removing these abnormalities.
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Spare parts were also organized, reducing downtime (parts can be found quickly) and waste
Nuts & bolts sorted as per specifications
Tool
storage organized
Parts like gears,
bushes, sorted as per specifications
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Production data is now collected in a standardized format, for discussion in the daily meetings
Before(not standardized, on loose
pieces of paper)
After (standardized, so easy to enter
daily into a computer)
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Daily performance boards have also been put up, with incentive pay for employees based on this
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39Data is weekly at the plant level. Standard errors are boostrap clustered at the firm level.
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Impact on productivity and profitability looks large
Estimate increased profit by about $475,000 per firm (≈ 24%)
Productivity increased by about 15%
Long-run impacts potentially much larger as more flexibility on changing inputs and product choice
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Management practices before and after treatment
Performance of the firms before and after treatment
• Quality
• Inventory
• Operational efficiency
Why were these practices not introduced before?
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So why did these firms have bad management?
Asked the consultants to investigate the non-adoption of each of the 38 practices, in each plant, every other month
They did this by discussion with the owners, managers and workers, observation of the factory, and from their experiences of trying to change management practices.
The next slide shows this data over time
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1 month before
1 month after
3 months
after
5 months
after
7 months
after
9 months
after
Lack of information(not aware of the practice)
38.6 12.8 2.2 0.5 0.4 0.3
Incorrect information(wrong cost-benefit analysis)
29.3 33.3 31.9 29.2 28.5 27.5
Owner ability, time and/or procrastination
1.3 9.1 7.2 7.5 7 6.7
Manager incentives and/or authority
0 2.1 2.4 3.0 3 3.2
Not profitable(non-adoption is correct)
0 0.2 0.4 0.5 0.5 0.5
Other(variety of other reasons)
0 0.2 0.4 0.2 0.5 0.5
Total(% practices not adopted)
73 57.7 44.3 40.9 39.8 38.6
Reason for the non-adoption of the practices in the treatment plants (as a % of all 38 practices)
Notes: covers 532 practices (38 practices in 14 plants) in the treatment plants. Table 9 (in the paper) also has values for control and non-experimental plants.
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Lack of information
Incorrect infor-
mation
Owner ability pro-
crastination
Plant manager
incentives or authority
Other Doing
Lack of information
33 22.3 13.5 1.8 0.9 28.4
Incorrect information
92 0.4 7.6
Owner ability, time or procrastination 81.8 18.2
Manager incentive and/or authority 100
Not profitable 100
Other100
Transition matrix for the reasons for non-adoption2 months ahead (t+1)
Cu
rren
t (t
)
Note: All blank cells are zero. Shows transition of reasons for non adoption to other reasons or implementation (“doing”) over each two month period. Averaged over all treatment firms for months 1 to 11.
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Why does competition not fix badly managed firms?
Bankruptcy is not (currently) a threat: at weaver wage rates of $5 a day these firms are profitable
Reallocation appears limited: Owners take all decisions as they worry about managers stealing. But owners time is constrained – they already work 72.4 hours average a week – limiting growth. One explanation for Hsieh and Klenow (2009) results.
As an illustration firm size is more linked to number of male family members (corr=0.689) - who are trusted to be given managerial positions - than management scores (corr=0.223)
Entry appears limited: Capital intensive ($13m assets average per firm), and no guarantee new entrants are any better
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Why doesn’t the consulting market fix this?
90% of the reason for non-adoption is informational, so firms not aware they are badly managed
But, surely consultants could contact firms telling them about their services?
• In India there is an active telesales market selling variety of cost reduction services, so not easy
But, why don’t consultants advertise free consulting and get paid through profit sharing?
• But, firms not reporting honest profits to the tax authorities so unlikely to do so to consulting firms
And, firms are breaking tax, labor and safety laws so are also nervous about outsiders (we had WB and Stanford endorsement)
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SummaryFirms in developing countries often have poor management practices, which lowers their productivity
Reasons include lack of information about modern management practices, and limited CEO ability and procrastination
Policy implications
A) Competition and FDI: free product markets and encourage foreign multinationals
B) Rule of law: improve rule of law to encourage reallocation and ownership and control separation
C) Training: improved basic training around management skills
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Finally, not to pick on the Indians, one country even exports TV shows about bad managers.....
Michael Scott(USA)
David Brent (Britain)
Basil Fawlty (Britain)
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The production technology has not changed much over time
Warp beam
Krill
The warping looms at Lowell Mills in 1854, Massachusetts
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“Non adoption flow chart” used to collect data
Was the firm previously awarethat the practice existed? Lack of information
Can the firm adopt the practice with existing staff & equipment?
Did the owner believe introducing the practice would be profitable?
Low ability of the owner and/or procrastination
Does the firm have enough internal financing or access to credit?
Do you think the CEO was correct about the cost-benefit tradeoff?
Could the firm hire new employees or consultants
to adopt the practice?
Credit constraints
External factors (legal, climate etc)Is the reason for the non adoption of the practice internal to the firm?
Could the CEO get his employees to introduce the practice?
Did the firm realize this would be
profitable?
Would this adoption be profitable Not profit maximizing
Incorrect information
Lack of local skills
Other reasons
Limited incentives and/or authority for employees
Yes
No
Legend
Conclusion
Hypothesis
No
Yes
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Are these Hawthorne effects (temporary increases in performance due to monitoring?
• Treatment and control plants both had initial 1 month of diagnostics and extended follow-up
• Improvements take time to arise, and in areas (quality, inventory and efficiency) where practices are changing
• Improvements persisted for several months after the intervention phase (although still collecting data)
• Firms themselves also believe the improvements work and have rolled these out to other plants