Understanding the Great Recessionyashiv/IsraelDec2013.pdf · Martin Eichenbaum Understanding the...
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Understanding the Great Recession
Martin Eichenbaum
December, 2013
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Understanding the Great Recession
Martin Eichenbaum
December, 2013
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Introduction
What forces drove real quantities in the Great Recession?
Shocks to financial markets were key drivers, even for variables likelabor force participation.Government shocks weren’t key drivers: because of their size andtiming (consistent with ZLB literature).Fiscal expansion could have been very helpful but it never reallyhappened.
Inferences are based on U.S. data and a modified version of NewKeynesian (NK) model used by leading policy institutions.
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What about inflation
Standard NK analysis implies inflation would have dropped by muchmore than it did.
We identify other factors that prevented a large drop in inflation.
Financial market shocks raised the cost of working capital.Fall and slow recovery in productivity (TFP) also raised firms’costs.
The fall in TFP is deeply troubling from a longer term perspective.
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Outline
The Great Recession - the facts.
A structural model, estimated using pre-2008 data, CET (2013).
Use estimated model to analyze the Great Recession.
A few words about Europe and the ‘Austerians’.
Lessons for Israel.
Preventing crises.Managing crisis.
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The Great Recession - the facts
2002 2004 2006 2008 2010 2012
−2.8
−2.75
−2.7
Log Real GDP
2002 2004 2006 2008 2010 20121
1.2
1.4
1.6
1.8
2
2.2
Inflation (%, y−o−y)
2002 2004 2006 2008 2010 2012
1
2
3
4
5
Federal Funds Rate (%)
2002 2004 2006 2008 2010 2012
5
6
7
8
9
Unemployment Rate (%)
2002 2004 2006 2008 2010 2012
59
60
61
62
63
64
Employment/Population (%)
2002 2004 2006 2008 2010 2012
4.54
4.56
4.58
4.6
4.62
4.64
Log Real Wage
2002 2004 2006 2008 2010 2012
−5.55
−5.5
−5.45
Log Real Consumption
2002 2004 2006 2008 2010 2012
−5.8
−5.7
−5.6
−5.5
Log Real Investment
2002 2004 2006 2008 2010 2012
64
65
66
67
Labor Force/Population (%)
2002 2004 2006 2008 2010 2012
2
3
4
5
6
7
G−Z Corporate Spread (%)
2002 2004 2006 2008 2010 2012
0.2
0.25
0.3
Log TFP
Figure 6: The Great Recession in the U.S.
2002 2004 2006 2008 2010 2012
−4.42
−4.4
−4.38
−4.36
−4.34
Log Gov. Cons.+Invest.
Notes: Gray areas indicate NBER recession dates.
Data 2008Q2
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The Inflation Puzzle
Inflation dropped far less than many people anticipated.
For example, in the 1980 recession
Unemployment rose by about 5 percentage points.Inflation dropped by 10 percentage points.
In the Great Recession
Unemployment rose by about 5 percentage points.But inflation dropped by about 1 percentage points.
Did the Phillips curve became flatter?
Did other shocks affect firms’marginal costs?
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A Structural Model
Christiano, Eichenbaum and Evans (2005) style NK model.
Key feature of NK style models: nominal price rigidities.
Essential for the ZLB to matter.
Novel elements of extended model.
Endogenize labor force participation.Derive wage inertia as an equilibrium outcome.
Why not assume sticky wages, as in standard NK models?
Can’t examine some key policy issues, e.g. extension of unemploymentbenefits.
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Labor Market Dynamics
(1− Lt ) percent of population aren’t in labor force.Specialize in home production, receive unemployment benefits.
lt percent of population is employed.
(Lt − lt ) percent of population is unemployed, i.e. they’re in laborforce but aren’t employed.
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Labor market dynamics
At beginning of quarter some people enter the labor force.
Some may find jobs and some won’t (unemployed)
At end of each quarter, a fraction (1− ρ) of employed workers areseparated from firms.
Some separated workers find jobs immediately (job-to-job transitions)and some don’t.
Separated and unemployed workers have equal probability, 1− s, ofexiting the labor force for exogenous reasons.
A fraction s of separated and unemployed workers remain in the laborforce and search for work.
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Labor market
Three states, enormous gross flows between each state.Two classes of decisions are made in labor market: wage bargainingand labor force participation.
Employment*E*
Non,par/cipa/on*N*
Unemployment*U*
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Labor market decisions
Households make labor force participation decisionsSplit between unemployment and employment determined byjob-finding rateFirms determine how many workers to hire and therefore thejob-finding rate.
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Labor force participation decisions
People derive utility from market consumption good and goodsproduced at home.
Home good produced by individuals who aren’t in labor force and byunemployed people.
Household income:Wages of employed members,Unemployment compensation received by unemployed members,Capital income, interest income on bonds.
ExpendituresConsumptionNew bond investments, capital investments,Taxes
Members of household pool income, share income risks.Martin Eichenbaum () Understanding the Great Recession December, 2013 13 / 67
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Labor force participation decisions
In deciding whether to send people to labor force, household mustconsider
Probability of finding a job,Level of unemployment compensation if you don’t find a job,Current and future market wage in market relative to productivity athome.Probability of keeping a job if you find one.
It’s costly to adjust labor force participation rate, so household facesa dynamic, forward looking problem.
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Bargaining in labor markets
Employment*E*
Non,par/cipa/on*N*
Unemployment*U*
Bargaining*Three*types*of*worker,firm*mee/ngs:*
*i)*E*to*E*,*ii)*U*to*E,*iii)*N*to*E**
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Exogenous flows between different states
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Alternating Offers in a Simple Macro Model
Competitive final goods production: Yt =[∫ 10 (Yj ,t )
1λ dj]λ, λ > 1.
j th input produced by monopolistic ‘retailers’using capital andintermediate goods subject to stochastic changes in technology.
Retailers subject to Calvo price frictions: the source of nominalrigidities in our model.
A fraction ξ of these firms change prices each period.
Retailers have to borrow working capital to pay for variable factors ofproduction.
Intermediate good is produced by flexible price, competitive firmsusing labor.
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Bargaining in the Labor Market
Firms pay a fixed cost to meet a worker.
Then, workers and firms bargain.
Better off reaching agreement than parting ways.Disagreement leads to continued negotiations.
If bargaining costs don’t depend sensitively on state of economy,neither will wages.
After expansionary shock, rise in wages is relatively small.
See CET (2013), for intuition in a DSGE model with capital.
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Spot wages
In benchmark model, workers and firms bargain over wage rate ineach period (spot wages).
Also consider approach where agents bargain over expected presentvalue of wage payments.
Two approaches lead to identical allocations, though possiblydifferent spot wages.
Latter approach is consistent with nominal wage of given worker at afirm being constant for extended periods of time.Wage changes only for new hires.Wages of job changers are more volatile than wages of incumbents.
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Spot wages
‘Spot wage’approach is useful benchmark for two reasons.
Lets us easily incorporate wage data into our empirical analysis.PV approach makes strong assumptions about agents’ability tocommit to stream of wage payments.
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Modified version of Hall-Milgrom
Bargaining protocol:
Day 1: firm makes opening offer. Worker can accept, reject and walkaway or make counteroffer.
Day 2: worker makes counteroffer in case he rejected on first day. Firmcan accept, reject and walk away or make counteroffer.
Day 3: firm makes counteroffer in case it rejected worker’s counteroffer...
Last day: worker makes take-it-or-leave-it offer.
In equilibrium, opening offer is accepted.
Off -equilibrium offers, bargaining power, outside option of participantsaffect opening offer.
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Modified version of Hall-Milgrom
Bargaining costs:
Direct cost of γ to firm of rejecting worker offer and preparing acounteroffer.
Rejection risks total break down in negotiations with probability δ.
Each day that negotiations continue means firm loses production forthat day and workers loses wage.
Outside options matter
Unemployment benefits
Productivity in home sector
Job finding rate
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Details
Other standard features from empirical NK models (e.g., CEE, ACEL,SW).
Calvo price setting frictions, but no indexation.Habit persistence in preferences.Variable capital utilization.Investment adjustment costs.Taylor rule for monetary policy.
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Estimation Strategy
Estimation by impulse response matching, Bayesian methods.
Match dynamic effect of monetary policy shock and two types oftechnology shocks with analog objects estimated from data.
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Estimated Parameters, Pre-2008 Data
Prices change on average every 4 quarters.
δ : roughly 0.1% chance of a breakup after rejection.
γ : cost to firm of preparing counteroffer roughly 1 day’s production.
Posterior mode of hiring cost: 0.49% of GDP.
Elasticity of substitution between home and market goods: 3.
set a priori, see Aguiar-Hurst-Karabarbounis (2012).
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Estimated Parameters, Pre-2008 Data
Replacement ratio: unemployment payments relative to wage.
In model, estimated to be 0.17 (i.e., 17%).
Direct data measure:
gov’t payments for unemp. insurance per unemployedcompensation per employed worker
Mean of ratio in our sample period, 13.7%.
Standard DMP model requires replacement ratio > 95% to reproducevolatility of labor market data (Hagedorn-Manovskii).
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Responses to a Monetary Policy Shock
0 5 10
−0.2
0
0.2
0.4
GDP (%)
0 5 10
−0.2
−0.1
0
0.1
0.2
Unemployment Rate (p.p.)
0 5 10
−0.2
−0.1
0
0.1
0.2
Inflation (ann. p.p.)
0 5 10−0.8
−0.6
−0.4
−0.2
0
0.2
Federal Funds Rate (ann. p.p.)
0 5 10
−0.2
0
0.2
0.4
Hours (%)
0 5 10
−0.2
0
0.2
0.4
Real Wage (%)
0 5 10
−0.2
0
0.2
0.4
Consumption (%)
0 5 10−0.1
0
0.1
0.2Labor Force (%)
0 5 10−1
0
1
Investment (%)
0 5 10−1
0
1
Capacity Utilization (%)
0 5 10−1
0
1
Job Finding Rate (p.p.)
Figure 1: Medium−Sized Model: Impulse Responses to a Monetary Policy Shock
0 5 10−2
0
2
4
Vacancies (%)
Notes: x−axis in quarters.
VAR 95% VAR Mean Model
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Responses to a Neutral Technology Shock
0 5 10−0.2
0
0.2
0.4
0.6
0.8
GDP (%)
0 5 10
−0.2
−0.1
0
0.1
0.2
Unemployment Rate (p.p.)
0 5 10
−0.8
−0.6
−0.4
−0.2
0
0.2
Inflation (ann. p.p.)
0 5 10
−0.4
−0.2
0
0.2
Federal Funds Rate (ann. p.p.)
0 5 10−0.2
0
0.2
0.4
0.6
0.8
Hours (%)
0 5 10−0.2
0
0.2
0.4
0.6
0.8
Real Wage (%)
0 5 10−0.2
0
0.2
0.4
0.6
0.8
Consumption (%)
0 5 10−0.2
0
0.2
0.4
0.6Labor Force (%)
0 5 10
−1
0
1
2Investment (%)
0 5 10
−1
0
1
2Capacity Utilization (%)
0 5 10
−1
0
1
2Job Finding Rate (p.p.)
Figure 2: Medium−Sized Model: Impulse Responses to a Neutral Technology Shock
0 5 10
−2
0
2
4Vacancies (%)
Notes: x−axis in quarters.
VAR 95% VAR Mean Model
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What Shocks Drove the Economy During the GreatRecession?
To answer question:
Must take a stand on what economy would have looked like in absenceof shocks.Simple statistical procedure.
Use model to assess which specific shocks account for gap between:
What actually happened.What would have happened in absence of the shocks.
Next version of the paper will use a more sophisticated statisticalprocedure and alternative measures of TFP.
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The U.S. Great Recession
2002 2004 2006 2008 2010 2012
−2.8
−2.75
−2.7
Log Real GDP
2002 2004 2006 2008 2010 20121
1.2
1.4
1.6
1.8
2
2.2
Inflation (%, y−o−y)
2002 2004 2006 2008 2010 2012
1
2
3
4
5
Federal Funds Rate (%)
2002 2004 2006 2008 2010 2012
5
6
7
8
9
Unemployment Rate (%)
2002 2004 2006 2008 2010 2012
59
60
61
62
63
64
Employment/Population (%)
2002 2004 2006 2008 2010 2012
4.54
4.56
4.58
4.6
4.62
4.64
Log Real Wage
2002 2004 2006 2008 2010 2012
−5.55
−5.5
−5.45
Log Real Consumption
2002 2004 2006 2008 2010 2012
−5.8
−5.7
−5.6
−5.5
Log Real Investment
2002 2004 2006 2008 2010 2012
64
65
66
67
Labor Force/Population (%)
2002 2004 2006 2008 2010 2012
2
3
4
5
6
7
G−Z Corporate Spread (%)
2002 2004 2006 2008 2010 2012
0.2
0.25
0.3
Log TFP
Figure 6: The Great Recession in the U.S.
2002 2004 2006 2008 2010 2012
−4.42
−4.4
−4.38
−4.36
−4.34
Log Gov. Cons.+Invest.
Notes: Gray areas indicate NBER recession dates.
Data 2008Q2
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The U.S. Great Recession
‘
2002 2004 2006 2008 2010 2012
−2.8
−2.75
−2.7
Log Real GDP
2002 2004 2006 2008 2010 20121
1.2
1.4
1.6
1.8
2
2.2
Inflation (%, y−o−y)
2002 2004 2006 2008 2010 2012
1
2
3
4
5
Federal Funds Rate (%)
2002 2004 2006 2008 2010 2012
5
6
7
8
9
Unemployment Rate (%)
2002 2004 2006 2008 2010 2012
59
60
61
62
63
64
Employment/Population (%)
2002 2004 2006 2008 2010 2012
4.54
4.56
4.58
4.6
4.62
4.64
Log Real Wage
2002 2004 2006 2008 2010 2012
−5.55
−5.5
−5.45
Log Real Consumption
2002 2004 2006 2008 2010 2012
64
65
66
67
Labor Force/Population (%)
2002 2004 2006 2008 2010 2012
2
3
4
5
6
7
G−Z Corporate Spread (%)
2002 2004 2006 2008 2010 2012
0.2
0.25
0.3
Log TFP
Figure 6: The Great Recession in the U.S.
2002 2004 2006 2008 2010 2012
−4.42
−4.4
−4.38
−4.36
−4.34
Log Gov. Cons.+Invest.
Notes: Gray areas indicate NBER recession dates.
Data 2008Q2 Linear Trend from 2001Q1 to 2008Q2
2002 2004 2006 2008 2010 2012
−5.8
−5.7
−5.6
−5.5
Log Real Investment
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The U.S. Great Recession
2002 2004 2006 2008 2010 2012
−2.8
−2.75
−2.7
Log Real GDP
2002 2004 2006 2008 2010 20121
1.2
1.4
1.6
1.8
2
2.2
Inflation (%, y−o−y)
2002 2004 2006 2008 2010 2012
1
2
3
4
5
Federal Funds Rate (%)
2002 2004 2006 2008 2010 2012
5
6
7
8
9
Unemployment Rate (%)
2002 2004 2006 2008 2010 2012
59
60
61
62
63
64
Employment/Population (%)
2002 2004 2006 2008 2010 2012
4.54
4.56
4.58
4.6
4.62
4.64
Log Real Wage
2002 2004 2006 2008 2010 2012
−5.55
−5.5
−5.45
Log Real Consumption
2002 2004 2006 2008 2010 2012
−5.8
−5.7
−5.6
−5.5
Log Real Investment
2002 2004 2006 2008 2010 2012
64
65
66
67
Labor Force/Population (%)
2002 2004 2006 2008 2010 2012
2
3
4
5
6
7
G−Z Corporate Spread (%)
2002 2004 2006 2008 2010 2012
0.2
0.25
0.3
Log TFP
Figure 6: The Great Recession in the U.S.
2002 2004 2006 2008 2010 2012
−4.42
−4.4
−4.38
−4.36
−4.34
Log Gov. Cons.+Invest.
Notes: Gray areas indicate NBER recession dates.
Data 2008Q2 Linear Trend from 2001Q1 to 2008Q2 Forecast 2008Q3 and beyond
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The U.S. Great Recession: Data Targets
2010 2012 2014 2016−10
−8
−6
−4
−2
0GDP (%)
2010 2012 2014 2016
−1
−0.5
0
Inflation (p.p., y−o−y)
2010 2012 2014 2016−2
−1.5
−1
−0.5
0
Federal Funds Rate (p.p., annual)
2010 2012 2014 20160
1
2
3
4
Unemployment Rate (p.p.)
2010 2012 2014 2016
−4
−3
−2
−1
0Employment (p.p.)
2010 2012 2014 2016
−1.5
−1
−0.5
0
Labor Force (p.p.)
2010 2012 2014 2016−25
−20
−15
−10
−5
0Investment (%)
2010 2012 2014 2016
−8
−6
−4
−2
0Consumption (%)
2010 2012 2014 2016−5
−4
−3
−2
−1
0Real Wage (%)
2010 2012 2014 20160
1
2
3
4
5
G−Z Corp. Bond Spread (p.p.)
Figure 7: The U.S. Great Recession: Data vs. Medium−sized Model
2010 2012 2014 2016
−8
−6
−4
−2
0
2
Gov. Cons. & Investment (%)
Notes: Data are the differences between raw data and forecasts, see Figure 6. Gray areas indicate NBER recession dates.
Data
2010 2012 2014 2016
−3
−2
−1
0
TFP Level (%)
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The U.S. Great Recession: Data Targets
2010 2012 2014 2016−10
−8
−6
−4
−2
0GDP (%)
2010 2012 2014 2016
−1
−0.5
0
Inflation (p.p., y−o−y)
2010 2012 2014 2016−2
−1.5
−1
−0.5
0
Federal Funds Rate (p.p., annual)
2010 2012 2014 20160
1
2
3
4
Unemployment Rate (p.p.)
2010 2012 2014 2016
−4
−3
−2
−1
0Employment (p.p.)
2010 2012 2014 2016
−1.5
−1
−0.5
0
Labor Force (p.p.)
2010 2012 2014 2016−25
−20
−15
−10
−5
0Investment (%)
2010 2012 2014 2016
−8
−6
−4
−2
0Consumption (%)
2010 2012 2014 2016−5
−4
−3
−2
−1
0Real Wage (%)
2010 2012 2014 20160
1
2
3
4
5
G−Z Corp. Bond Spread (p.p.)
2010 2012 2014 2016
−3
−2
−1
0
TFP Level (%)
Figure 7: The U.S. Great Recession: Data vs. Medium−sized Model
2010 2012 2014 2016
−8
−6
−4
−2
0
2
Gov. Cons. & Investment (%)
Notes: Data are the differences between raw data and forecasts, see Figure 6. Gray areas indicate NBER recession dates.
Data
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Alternative measures of TFP from BLS convey samemessagePersistent drop in growth rate of TFP
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Financial Market Shocks
Consumption wedge, ∆bt : motivated by ZLB literature stressingconsumption drop.
Deleveraging, tighter borrowing constraints,...
Implemented as in Smets-Wouters (2007):
1 = (1+ ∆bt )Etmt+1Rt/πt+1
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Financial Market Shocks
Consumption wedge, ∆bt : motivated by ZLB literature stressingconsumption drop.
Deleveraging, tighter borrowing constraints,...
Implemented as in Smets-Wouters (2007):
1 = (1+ ∆bt )Etmt+1Rt/πt+1
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Financial Market Shocks
Financial wedge, ∆kt : motivated by financial frictions literature
Increased uncertainty in financial markets, credit risk premia
Reduced form of ‘risk shock’, Christiano-Davis (2006).
1 = (1− ∆kt )Etmt+1Rkt+1/πt+1
Financial wedge also applies to working capital loans:
Interest charge on working capital: αRt(1+ ∆kt
)+ 1− α
α is share of inputs financed with loans.Higher financial wedge directly increases cost to firms.
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Measurement of Shocks
1 Financial wedge, 1− ∆kt , measured using GZ spread data.
2 Government shock measured using G data.
3 We don’t have data on the consumption wedge, ∆bt .
Set ∆bt = 0.005 for 20 quarters.
Stochastic simulation starting 2007Q4 (nonlinear model, no perfectforesight).
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The U.S. Great Recession: Data vs. Model
2010 2012 2014 2016−10
−8
−6
−4
−2
0GDP (%)
2010 2012 2014 2016
−1
−0.5
0
Inflation (p.p., y−o−y)
2010 2012 2014 2016−2
−1.5
−1
−0.5
0
Federal Funds Rate (p.p., annual)
2010 2012 2014 20160
1
2
3
4
Unemployment Rate (p.p.)
2010 2012 2014 2016
−4
−3
−2
−1
0Employment (p.p.)
2010 2012 2014 2016
−1.5
−1
−0.5
0
Labor Force (p.p.)
2010 2012 2014 2016−25
−20
−15
−10
−5
0Investment (%)
2010 2012 2014 2016
−8
−6
−4
−2
0Consumption (%)
2010 2012 2014 2016−5
−4
−3
−2
−1
0Real Wage (%)
2010 2012 2014 20160
1
2
3
4
5
G−Z Corp. Bond Spread (p.p.)
2010 2012 2014 2016
−3
−2
−1
0
TFP Level (%)
Figure 7: The U.S. Great Recession: Data vs. Medium−sized Model
2010 2012 2014 2016
−8
−6
−4
−2
0
2
Gov. Cons. & Investment (%)
Notes: Data are the differences between raw data and forecasts, see Figure 6. Gray areas indicate NBER recession dates.
Data
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The U.S. Great Recession: Data vs. Model
2010 2012 2014 2016−10
−8
−6
−4
−2
0GDP (%)
2010 2012 2014 2016
−1
−0.5
0
Inflation (p.p., y−o−y)
2010 2012 2014 2016−2
−1.5
−1
−0.5
0
Federal Funds Rate (p.p., annual)
2010 2012 2014 20160
1
2
3
4
Unemployment Rate (p.p.)
2010 2012 2014 2016
−4
−3
−2
−1
0Employment (p.p.)
2010 2012 2014 2016
−1.5
−1
−0.5
0
Labor Force (p.p.)
2010 2012 2014 2016−25
−20
−15
−10
−5
0Investment (%)
2010 2012 2014 2016
−8
−6
−4
−2
0Consumption (%)
2010 2012 2014 2016−5
−4
−3
−2
−1
0Real Wage (%)
2010 2012 2014 20160
1
2
3
4
5
G−Z Corp. Bond Spread (p.p.)
2010 2012 2014 2016
−3
−2
−1
0
TFP Level (%)
Figure 7: The U.S. Great Recession: Data vs. Medium−sized Model
2010 2012 2014 2016
−8
−6
−4
−2
0
2
Gov. Cons. & Investment (%)
Notes: Data are the differences between raw data and forecasts, see Figure 6. Gray areas indicate NBER recession dates.
Data Model
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Decomposing What Happened into Shocks
Our shocks roughly reproduce the actual data.
We investigate the effect of a shock by shutting it off.
Resulting decomposition isn’t additive because of nonlinearities in themodel.
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Effects of Financial Wedge Shock
Accounts for the biggest effect on real quantities.
Rise in financial wedge represents tax on intertemporal margin.
With effi cient markets: substitution from investment to consumption.
Accomplished by large drop in interest rate.BUT: drop not feasible when ZLB is hit.So, consumption not stimulated -> recession.Drop in investment and consumption -> GDP must fall.Households see terrible labor market -> keep people at home.
Labor force drops less than employment -> unemployment rises.
Recession leads to lower marginal costs -> inflation falls.
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Effects of Financial Wedge Shock
2010 2012 2014 2016
−1
−0.5
0
0.5
Inflation (p.p., y−o−y)
2010 2012 2014 2016
−1.5
−1
−0.5
0
0.5
Federal Funds Rate (p.p., annual)
2010 2012 2014 20160
1
2
3
4
Unemployment Rate (p.p.)
2010 2012 2014 2016
−3
−2
−1
0
Employment (p.p.)
2010 2012 2014 2016−1.5
−1
−0.5
0
Labor Force (p.p.)
2010 2012 2014 2016
−20
−15
−10
−5
0
Investment (%)
2010 2012 2014 2016
−8
−6
−4
−2
0Consumption (%)
2010 2012 2014 2016
−2.5
−2
−1.5
−1
−0.5
0
Real Wage (%)
2010 2012 2014 20160
1
2
3
4
5
G−Z Corp. Bond Spread (p.p.)
2010 2012 2014 2016
−1.5
−1
−0.5
0TFP Level (%)
Figure 10: The U.S. Great Recession: Effects of Financial Wedge
2010 2012 2014 2016
−8
−6
−4
−2
0
2
Gov. Cons. & Investment (%)
Notes: Baseline results as in Figure 7. Gray areas are NBER recession dates.
Baseline model
2010 2012 2014 2016−10
−8
−6
−4
−2
0GDP (%)
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Effects of Financial Wedge Shock
2010 2012 2014 2016−10
−8
−6
−4
−2
0GDP (%)
2010 2012 2014 2016
−1
−0.5
0
0.5
Inflation (p.p., y−o−y)
2010 2012 2014 2016
−1.5
−1
−0.5
0
0.5
Federal Funds Rate (p.p., annual)
2010 2012 2014 20160
1
2
3
4
Unemployment Rate (p.p.)
2010 2012 2014 2016
−3
−2
−1
0
Employment (p.p.)
2010 2012 2014 2016−1.5
−1
−0.5
0
Labor Force (p.p.)
2010 2012 2014 2016
−20
−15
−10
−5
0
Investment (%)
2010 2012 2014 2016
−8
−6
−4
−2
0Consumption (%)
2010 2012 2014 2016
−2.5
−2
−1.5
−1
−0.5
0
Real Wage (%)
2010 2012 2014 20160
1
2
3
4
5
G−Z Corp. Bond Spread (p.p.)
2010 2012 2014 2016
−1.5
−1
−0.5
0TFP Level (%)
Figure 10: The U.S. Great Recession: Effects of Financial Wedge
2010 2012 2014 2016
−8
−6
−4
−2
0
2
Gov. Cons. & Investment (%)
Notes: Baseline results as in Figure 7. Gray areas are NBER recession dates.
Baseline model Constant financial wedge
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Findings for Other Shocks
Paper does similar decomposition for consumption wedge, G , andTFP.
Most important impact on real quantities come from consumptionand financial wedges.
Inflation:
Disinflation relatively modest because of the operation of the workingcapital channel and also TFP.Both raise countervailing pressure on inflation.
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Effects of Spread on Working Capital:
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Phillips Curve
Widespread skepticism that NK model can account for modest declinein inflation during the Great Recession.
One response: Phillips curve got flat or always was very flat.
Alternative: standard Phillips curve misses working capital termincluding financial wedge.
Usually that term is not very important, but it was in post-2008 period.
Slowdown in TFP works in same direction: contractionary but raisesmarginal costs and inflation.
Net effect: huge recession, with relatively small change in inflation.
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Gilchrist-Zakrajsek Corporate Spread
1975 1980 1985 1990 1995 2000 2005 20100
1
2
3
4
5
6
7
8
Per
cent
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Fiscal Policy: lessons from Europe and the U.S.
According to our model, increases in government purchases havepowerful effects when the ZLB constraint is highly binding
But they didn’t play a large role in the Great Recession and itsaftermath.
That’s because the U.S. never had a major stimulus of the type calledfor in our model.
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ARRP (2009)
The Obama ARRA (2009) fiscal stimulus package cost about to $800billion.
Large portions were devoted to tax relief and transfer payments to the‘vulnerable (roughly $400 billion).To a first approximation, effectiveness of this type of governmentspending depends on failure of Ricardian equivalence.
ARRA also included large transfers to fiscal and state governments.
States mainly used to funds to reduce borrowing and increase transferpayments like Medicare.
What would have happened to state and local purchases of goods andservices if ARRA hadn’t happened?
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US real Government Consumption and Gross InvestmentAnnual rates, billions of chained 2005 dollars
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Effect of ARRA on major Federal budget categoriesAnnual rates, US $billion
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What about Europe?
We can’t learn much from the U.S. about effi cacy of fiscal policywhen ZLB is binding.
What about Europe?
The European crisis is very different from the US crisis.
But austerity hasn’t reduced debt-to-GDP ratios much in Europe andcertainly hasn’t produced a recovery.
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Austerity
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Euro Area Gross Public DebtPercent of GDP
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Lessons for Israel
Do your best to avoid a Great Recession style episode.
Israel is a small open economy that’s highly vulnerable todevelopments abroad.
Even if you are perfect, other countries won’t be.
It’s critical that Israel have the right tools in place to deal with eithera domestic or a foreign crisis.
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Avoiding a domestic crisis
Stop asset pricing booms associated with highly-leveraged financialintermediaries.
Not bailing out too-big-to fail financial intermediaries isn’t timeconsistent.
You must regulate and pursue macroprudential supervision.High capital requirements on systemically important financialinstitutions (Basel 3, plus shadow banking system).Central banks must lean against credit-driven bubbles viastate-dependant regulations.
Challenges:Prudential policies are more subject to political pressure than monetarypolicy.Firms will work hard to get around regulations.
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Lessons for Israel: before a crisis
Set flexible inflation-target to minimize chances of binding ZLBepisode.
How much of an insurance premium in form of an inflation tax are wewilling to pay in non-ZLB period to minimize severity of ZLB-stylecrises?
Strong credible commitment to stabilize inflation in long run byhaving an explicit inflation objective.
Gives you flexibility to pursue policies to stabilize output in short run ifa crisis does occur.
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Lessons for Israel: before a crisis
Minimize currency mismatch between firms and financialintermediaries’assets and liabilities.
This allows you to use exchange rate policy much more aggressivelyto manage aggregate demand during a crisis.
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Despite your best plans, there will be crises
Central bank needs to be an aggressive lender of last resort.
Bonus 1: credible commitment to play this role limits self-fulfilling runsin financial sector.Bonus 2: you’ll probably make a lot of money doing it.
After the crisis, move rapidly clean up and recapitalize the banks.
Didn’t happen in Japan in the 1990s, and was costly.It’s not happening in Europe and it’s also very costly.It did happen in the US in this crisis, and it helped the recovery.
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After a ZLB-style crisis
Use fiscal policy aggressively..
Don’t repeat the mistakes of Obama’s ARRA.
You can only do this if you had a prudent fiscal policy before the crisis.
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Capital flows and exchange rates
Best way to deal with volatile capital flows is by letting exchange rateabsorb most of the adjustment.
If investors want to take their funds out, let them.
Exchange rate will depreciate.This depreciation will lead, if anything, to an increase in exports and anincrease in output.
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Traditional arguments against exchange rate adjustment
1 If domestic firms, banks borrow in foreign currency, depreciation hasadverse effects on balance sheets, leads to decrease in domesticdemand that may more than offset increase in exports.
2 Much of nominal depreciation may translate into higher inflation.
3 Large movements in exchange rate may lead to disruptions, both inreal economy and in financial markets.
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Capital flows and exchange rates
Force of first two argument can be minimized by minimizing currencymismatch of firms’, financial intermediaries’assets and liabilities.
Macroprudential measures,Development of local currency bond markets,Exchange rate flexibility which leads to better perception by borrowersof exchange rate risk.
Credible monetary policy and inflation targets lead to more anchoredinflation expectations
Limits pass-through of exchange rate movements into inflation.
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Intervening in exchange rate markets
During this crisis, the NIS appreciated because of a flight to safety.
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Exchange rates
The BoI engineered a countervailing depreciation of the NIS.
Open economies versions of model I discussed indicate these measuresare highly desirable and effective, especially in a ZLB episode.
But, efforts to depreciate currency can’t be a long-term policy forgrowth or a substitute for high productivity and entrepreneurship.
Israel has no problem when it comes to entrepreneurship.
According to some recent media reports, Russian offi cials arepurchasing snow-making machines produced in Israel.
But productivity is a real concern, not just in Israel but worldwide.
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Beyond the Great Recession
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