Debt Constraints and Employment. Patrick Kehoe, Virgiliu Midrigan and Elena Pastorino
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1 Debt Constraints and Employment Patrick Kehoe, Virgiliu Midrigan and Elena Pastorino
2 Motivation: U.S. Great Recession Large, persistent drop in employment
3 U.S. Employment-Population, aged Employment Rate: Aged 25-54: All Persons for the United States (Percent) Source: Organisation for Economic Co-operation and Development 2014 research.stlouisfed.org
4 Motivation: U.S. Great Recession Large, persistent drop in employment Regions with higher HH debt/income in 2007 experienced larger decline in debt larger decline in consumption larger decline in employment Regional employment drop largely due to nontradables
5 Household Debt/Income, Change Debt-Income '07-' TX NY PA OH IL MI NJ USA Household Debt-Income Ratio 2007 AZ FL CA NV source: Midrigan and Philippon (2011)
6 Consumption, TX PA Log Change Consumption '07-' NY OH IL MI NJ USA Household Debt-Income Ratio 2007 AZ FL CA NV source: Midrigan and Philippon (2011)
7 Employment/Population, Log Change Empl-Pop '07-' TX NY PA OH IL MI NJ USA Household Debt-Income Ratio 2007 AZ FL CA NV source: Midrigan and Philippon (2011)
8 Motivation: U.S. Great Recession Large, persistent drop in employment Regions with higher HH debt/income in 2007 experienced larger decline in debt larger decline in consumption larger decline in employment Regional employment drop largely due to nontradables
9 Figure 5 Aggregate Demand and Employment across Counties: Geographical Herfindahl-Based Non-Tradable and Tradable Industries This figure presents scatter-plots of county level employment growth from 2007Q1 2009Q1 against the debt to income ratio of the county as of The le panel examines employment Employment in non-tradable industries based by on geographical sector, herfindahl index and the right panel focuses on tradable industries based on the same index. The sample includes only counties with more than 50,000 households. Non-Tradable Tradable Non-Tradable Sector Employment Growth 07Q1-09Q1 (based on low geographical concentration) Tradable Sector Employment Growth 07Q1-09Q1 (based on high geographical concentration) Debt to Income Debt to Income 2006 source: Mian and Sufi (2013)
10 U.S. Great Recession Popular interpretation: Tightening of HH credit leads to drop in consumption Drop in consumption leads to drop in employment At odds with predictions of standard models Consumption and leisure normal goods Absent relative price changes move together Unless prices or wages are sticky Need to assume lots of stickiness Guerrieri-Lorenzoni, Midrigan-Philippon
11 We study alternative mechanism Tighter debt constraints less consumption & less employment Idea: large returns to tenure/experience Work is an investment HH debt constraints reduce returns to such investments Make employment less valuable
12 Alternative mechanism Otherwise standard DMP setup When debt constraints are tighter Consumers discount returns to experience more Firms discount future profits more So surplus from match is reduced Firms create fewer vacancies Do not explicitly impose wage rigidities But arise endogenously due to debt constraints
13 Model overview Continuum of islands in small open economy. Labor immobile Diamond-Mortensen-Pissarides with on-the-job human capital accumulation idiosyncratic shocks to worker human capital full insurance inside household household debt limit No aggregate uncertainty Study effect of one-time, unanticipated tightening of debt limit 1. economy-wide collateral constraint (U.S. recession) 2. island collateral constraint (predictions for U.S. regions)
14 Outline 1. Response to economy-wide shock to credit constraint No changes in relative prices No reallocation between tradeable/non-tradeable Identical to those of one good model 2. Island-specific shock to credit constraint Changes in relative prices & terms of trade Labor reallocation from non-tradeable to tradeable More notation, leave for later
15 One-Good Economy
16 Household s problem Consists of measure 1 of workers and continuum firms. Income of worker i : y it = wages or home production T t : profits net of vacancy posting costs max t β t u (c t ) s.t. c t + a t+1 = (1 + r)a t + y it di + T t Borrowing constraint: a t+1 d t d t and r t exogenous. Study effect of unanticipated changes
17 Household s problem Debt constraint binds as long as u (c t )/u (c t+1 ) > β(1 + r) Binds in steady state and our experiments Problem reduces to choosing employment & vacancies Q t = u (c t ): multiplier on date t budget constraint Stochastic OLG structure: φ: worker survival probability
18 Technology and Human Capital Newborns enter with human capital log(z) N (0, σ 2 z /(1 ρ 2 z))
19 Technology and Human Capital Newborns enter with human capital log(z) N (0, σ 2 z /(1 ρ 2 z)) On-the-job human capital accumulation/off-the-job depreciation employed draw z from F e (z z) (drifts up) log z = (1 ρ z )µ z + ρ z log z + σ z ε non-employed draw z from F u (z z) (drifts down) log z = ρ z log z + σ z ε
20 Technology and Human Capital Newborns enter with human capital log(z) N (0, σ 2 z /(1 ρ 2 z)) On-the-job human capital accumulation/off-the-job depreciation employed draw z from F e (z z) (drifts up) log z = (1 ρ z )µ z + ρ z log z + σ z ε non-employed draw z from F u (z z) (drifts down) log z = ρ z log z + σ z ε Employed: produce z and receive wage w t (z) Non-employed: produce b
21 Matching technology M (u t, v t ) = Bu η t v1 η t Market tightness: θ t = v t /u t Probability firm finds worker λ f,t = M (u t, v t ) v t = ( ut v t ) η = Bθ η t Probability worker finds firm λ w,t = M t (u t, v t ) u t = ( vt u t ) 1 η = Bθ 1 η t
22 Worker values Match exogenously destroyed with probability σ Discounted lifetime income if currently employed: W t (z) = ω t (z) + βφ Q t+1 (1 σ) max [W t+1 (z ), U t+1 (z )] df e (z z) Q t +βφ Q t+1 σ U t+1 (z ) df e (z z) Q t Discounted lifetime income if currently not employed: U t (z) = b + βφ Q t+1 λ w,t Q t βφ Q t+1 Q t (1 λ w,t ) max [W t+1 (z ), U t+1 (z )] df u (z z) + U t+1 (z ) df u (z z)
23 Value of filled vacancy J t (z) = z ω t (z) + βφ Q t+1 Q t max [ J t+1 ( z ), 0 ] df e ( z z )
24 Wages Assume wages renegotiated period by period Nash bargaining: max [W t(z) U t (z)] γ J t (z) 1 γ ω t (z) γ W t (z) U t (z) = 1 γ J t (z)
25 Free entry condition Firms pay κ units of output to post vacancy Let n u t (z) measure of unemployed, ñ u t (z) = nu t (z) dn u t (z) 0 = κ + βφ Q t+1 λ f,t Q t max [ J t+1 ( z ), 0 ] df u ( z z ) dñ u t (z) pins down θ t
26 Parameterization Assigned parameters period = 1 quarter β = /4, 1 + r = /4, φ = 1 1/160 Probability of separation: σ = 0.10 (Shimer 2005) Bargaining share and elasticity matching fn: η = γ = 1/2 u(c t ) = c1 α t 1 α, α = 5 so IES = 0.2 Micro-evidence: IES Hall 88, Attanasio et. al. 02, Vissing-Jorgensen 02
27 Calibrated parameters Vacancy posting cost, κ Efficiency matching function: B Persistence shocks to z: ρ z Std. dev. of shocks to z: σ z Home production, b Returns to work: µ z
28 Calibrated parameters Vacancy posting cost, κ Normalize steady-state market tightness θ = 1 Efficiency matching function: B Persistence shocks to z: ρ z Std. dev. of shocks to z: σ z Home production, b Returns to work: µ z
29 Calibrated parameters Vacancy posting cost, κ Efficiency matching function: B Employment-populatio ratio = 0.8 (U.S. all adults 25-54) Persistence shocks to z: ρ z Std. dev. of shocks to z: σ z Home production, b Returns to work: µ z
30 Calibrated parameters Vacancy posting cost, κ Efficiency matching function: B Persistence shocks to z: ρ z std. dev. of log initial wages = 0.94 (PSID) Std. dev. of shocks to z: σ z Home production, b Returns to work: µ z
31 Calibrated parameters Vacancy posting cost, κ Efficiency matching function: B Persistence shocks to z: ρ z Std. dev. of shocks to z: σ z std. dev. changes log wages = 0.21 (Floden-Linde 2001) Home production, b Returns to work: µ z
32 Calibrated parameters Vacancy posting cost, κ Efficiency matching function: B Persistence shocks to z: ρ z Std. dev. of shocks to z: σ z Home production, b b/ median ω = 0.4 (Shimer 2005) Returns to work: µ z
33 Calibrated parameters Vacancy posting cost, κ Efficiency matching function: B Persistence shocks to z: ρ z Std. dev. of shocks to z: σ z Home production, b Returns to work: µ z returns to tenure & experience data
34 Returns to work in the data Buchinsky et. al. (2010) estimate log(w it ) = c i + x itβ + f (experience it ) + g(tenure it ) + J it + ε it J it summarizes history previous jobs l = 1 : M it J i,t = M it 4 l=1 k=1 ( φ 0 k + φ s ktenure l i + φ e kexperience l ) i d l k,i
35 Returns to work in the data log(w it ) = c i + x itβ + f (experience it ) + g(tenure it ) + J it + ε it Cumul. returns to experience: 5 yrs 10 yrs 15 yrs College graduates High School graduates High School dropouts Cumul. returns to tenure: 5 yrs 10 yrs 15 yrs College graduates High School graduates High School dropouts
36 Returns to work in the data log(w it ) = c i + x itβ + f (experience it ) + g(tenure it ) + J it + ε it Our approach: Simulate paths for experience and tenure for our model Use BFKT estimates (high school grads) to evaluate log (ŵ it ) = f (experience it ) + g(tenure it ) + J it Minimize distance mean log(ŵ it ) & log(w it ) model 5.2% per year
37 Moments used in calibration Data Model fraction employed mean growth rate wages home production/ median wage std. dev. wage changes std. dev. initial wages
38 Returns to work: model vs. data 1.5 Our model BFKT estimates experience (years) Initialize w/ 0 experience, mean z it exp = 0, no shocks
39 Parameter values B steady state match probability ρ z /4 persistence human capital σ z std. dev. efficiency shocks µ z 2.82 returns to work b 1.75 home production / mean z new entrant
40 Parameter values B steady state match probability ρ z /4 persistence human capital σ z std. dev. efficiency shocks µ z 2.82 returns to work b 1.75 home production / mean z new entrant Note: b low relative to mean z of new hire: 0.24
41 6 Steady state measures measure workers 8 x 10 3 log( z) log(b) log(z) measure unemployed 2.5 x log(z)
42 1 0.5 Policy and value functions firm profits 4 3 ω b wages log(z) J log(z) W U log(z) log(z)
43 Model implications fraction workers with w < b prob. job destroyed endogenously prob. worker matches, λ w fraction matches with positive surplus drop in w after non-employment spell 1.9% drop in w if not employed 1 year 6.1% drop in w if not employed 2 years 8.8%
44 Experiment: economy-wide credit crunch Binding debt limit: c t = d t (1 + r)d t 1 + y t Assume unanticipated tightening debt limit d t Choose path for d t so c t falls 5% then mean-reverts c t = 0.90c t c ( ) α Implies future discounted more: Q t+1 /Q t = ct+1 c t
45 Credit crunch Consumption Discount factor quarters quarters
46 Employment quarters
47 Employment vs. Consumption Consumption Employment quarters
48 Employment response Maximal drop employment 2.0% vs. 5.0% drop in C Employment drop much more persistent Cumulative impulse responses: 2 years: 10 years: overall: CIR E = 0.44 CIR C CIR E = 0.69 CIR C CIR E = 0.92 CIR C
49 Why does employment drop? Drop in Q t+1 /Q t reduces surplus W t (z) U t (z) + J t (z) Reduces returns to learning by doing for workers Reduces returns to posting vacancies for firms Employment drops because Some existing matches endogenously destroyed Fewer vacancies posted Fewer matches have positive surplus
50 Job separations quarters
51 Market tightness θ t λ w,t quarters
52 Probability match accepted quarters
53 Employment decomposition Shimer 2012 approach E t+1 = (1 s t )E t + λ w,t a t (1 E t ) s t : separation rate λ w,t : worker matching probability a t : acceptance rate Construct three counterfactual employment series: Vary s t, λ w,t, a t in isolation Leave others at steady state values
54 Employment decomposition actual vary separation rate vary matching rate vary acceptance rate quarters
55 Wages and Productivity mean wage productivity quarters
56 Consumer vs. firm debt constraints Our benchmark model: firms owned by households debt constraints change discount rate of workers & firms Separate role of each only let discount rate of workers change only let discount rate of firms change
57 Worker vs. firm debt constraints Benchmark Worker discount rate change Firm discount rate change quarters
58 Consumer vs. firm debt constraints Employment drops mostly because of worker discounting Worker retains most human capital after separation Longer horizon, surplus more sensitive to discount rate
59 Role of returns to work Employment falls much less absent returns to work Illustrate by setting µ z = 0 & σ z = 0 Similar results with heterogeneity: σ z > 0
60 No returns to work Benchmark No returns to work quarters
61 Comparison with Hall 2014 Results consistent with Hall 2014 Studies effect of increase discount rate in DMP model Steady state effects of change in discount rate small: r from 10% to 20%: U up from 5.8% to 5.88% Wage rigidities amplify effects
62 Intuition from simple model First, suppose no learning by doing ρw (z) = ω(z) σ (W (z) U (z)) ρu (z) = b + λ w (W (z) U (z)) ρj(z) = z w(z) σj(z)
63 Intuition from simple model First, suppose no learning by doing ρw (z) = ω(z) σ (W (z) U (z)) ρu (z) = b + λ w (W (z) U (z)) ρj(z) = z w(z) σj(z) Surplus: S(z) = W (z) U (z) + J(z) S(z) = z b ρ ρ = ρ + σ λ w not sensitive to ρ since λ w and σ much larger
64 Intuition from simple model Next, suppose dz = gzdt if employed, 0 otherwise ρw (z) = ω(z) σ (W (z) U (z)) + zgw (z) ρu (z) = b + λ w (W (z) U (z)) ρj(z) = z w(z) σj(z) + zgj (z)
65 Intuition from simple model Next, suppose dz = gzdt if employed, 0 otherwise ρw (z) = ω(z) σ (W (z) U (z)) + zgw (z) ρu (z) = b + λ w (W (z) U (z)) ρj(z) = z w(z) σj(z) + zgj (z) Surplus: S(z) = W (z) U (z) + J(z) S(z) = z b ρ + gz ( ρ g) ρ ρ = ρ + σ λ w ( ) g = g 1 + λw 2ρ : sensitive to ρ
66 Many-Good Economy
67 Many-Good Economy Multi-sector economy Each island produces tradable and nontradable goods Labor cannot move across islands but can switch sectors Study response to island-specific shocks evaluate model against Mian and Sufi (2013) evidence Firms owned by consumers on all islands
68 Preferences Household on island s: (βφ) t u (c t (s)) t=0 Consumption is an aggregate of tradeables (m) and non-tradables (n): c t (s) = ] [τ 1 σ (c n t (s)) µ 1 µ + (1 τ) 1 σ (ct m (s)) µ 1 µ Tradables imported from all other islands, s ( ct m (s) = c m t (s, s ) ν 1 ν ds ) ν ν 1
69 Prices Price of goods produced in s: p n t (s) and p m t (s) Price of composite imported good in s ( Pt m (s) = p m t ( s ) ) 1 1 ν 1 γ ds = Pm Aggregate price index in s P t (s) = [ ( ) τ (pt n (s)) 1 µ 1 µ ] 1 1 µ + (1 τ) Pm
70 Demand for goods Assume non-employed produce b units of composite good Let b t (s) = b(1 e t (s)): total home production Only c t (s) b t (s) purchased on the market Demand for non-tradeables ( ) p ct n n µ (s) = τ t (s) ( ct (s) P t (s) b t (s) ) Demand for variety s tradeables: ( p ct m (s, s m ) = (1 τ) t (s ) ν ( ) µ ) Pm ( ct (s) P m P t (s) b t (s) )
71 Technology Two sectors: tradeables (x) and non-tradeables (n) y = z in both sectors Matching technology: Mt x = B x (u t ) η (vt x ) 1 η and Mt n = B n (u t ) η (vt n ) 1 η λ x w,t = M t x u t λ n w,t = M t n u t ( v = B x x t u t ( v = B n n t u t ) 1 η = B x (θ x t ) 1 η ) 1 η = B n (θ n t ) 1 η
72 Worker values Discount factor: S t = ( ct+1 c t ) α Pt P t+1 W x t (z) = ωt x (z) + βφs t (1 σ) max [ Wt+1 x (h, z ), U t+1 (z ) ] df e (z z) +βφs t σ U t+1 (z ) df e (z z) U t (z) = P t b + βφs t λ x w,t βφs t λ n w,t max [ W x t+1 (1, z ), U t+1 (z ) ] df u (z z) + max [ W n t+1 (1, z ), U t+1 (z ) ] df u (z z) + +βφs t ( 1 λ x w,t λ n w,t) U t+1 (z ) df u (z z)
73 Firm values No change in discount factor since owned by all islands Jt x (z) = pt x z ωt x (z) + βφ (1 σ) max [ J x t+1 (z ), 0 ] df e (z z) Jt n (z) = pt n z ωt n (z) + βφ (1 σ) max [ J n t+1 (z ), 0 ] df e (z z) Free entry: P m κ n = βφλ n f,t P m κ x = βφλ x f,t max [ J n t+1 (z ), 0 ] df u (z z) dñ u t (z) max [ J x t+1 (z ), 0 ] df u (z z) dñ u t (z)
74 Non-tradeables Equilibrium prices ( p n ) µ τ t (c t b t ) = P t zdn e,n t (z) Tradeables ( ξ: vacancy posting costs + interest on debt) ( p x ) ν t (1 τ) P m ( Pm P ) µ ( c b ) + ξ = zdn e,x t (z) Idea: drop in c t reduces pt n (more so when µ is low) labor flows to x, reduces pt x (more so when ν is low)
75 Additional parameters Preferences: τ = (2/3 employment non-traded Mian-Sufi) µ = ν = 1.5 (Backus-Kehoe-Kydland) Choose B x and B n so that: 80% employment-population steady state p x = p n Choose κ x s.t. θ x = 1, κ x /B x = κ n /B n Implies θ n = 1 and ω x (z) = ω n (z) Steady state predictions = one-sector model
76 Employment responses absent returns to work Total Tradable Nontradable quarters
77 Wage responses absent returns to work Average Tradable Nontradable quarters
78 Our model: employment Our model No returns to work quarters
79 Our model: nontradable employment Our model No returns to work quarters
80 Our model: tradable employment 0.02 Our model No returns to work quarters
81 Our model: wages Our model No returns to work quarters
82 Experiment motivated by Mian-Sufi 2013 Differentially tighten debt constraint on 20 islands Island 1: consumption falls 1% after 2 years... Island 20: consumption falls 20% after 2 years
83 Employment vs. consumption: data Log Change Empl-Pop '07-' NV Slope = 1/2 AZ OH FL CA USA NY NJ IL MI Log Change Consumption '07-'09 PA TX source: Midrigan and Philippon (2011)
84 Employment vs. consumption: model ln(e) Slope = ln(c)
85 Summary DMP model with returns to work predicts: employment sensitive to HH debt constraints as debt constraints reduce these returns so reduce match surplus and employment Predictions consistent with Mian-Sufi evidence
86 Figure 3 Aggregate Demand and Employment across Counties: Non-Tradable and Tradable Industries This figure presents scatter-plots of county level employment growth from 2007Q1 2009Q1 against the debt to income ratio of the county as of The left panel examines employment in non-tradable industries excluding construction and the right panel focuses on tradable industries. The sample includes only counties with more Employment than 50,000 households. The thin black line by in the left panel sector, is the non-parametric plot of non-tradable employment growth against debt to income. Non-tradable (excluding construction) Tradable Non-Tradable Employment Growth 07Q1-09Q1 (excludes construction) Tradable Employment Growth 07Q1-09Q Debt to Income Debt to Income 2006 source: Mian and Sufi (2013)
87 Our model: non-traded wages Our model No returns to work quarters
88 Our model: traded wages Our model No returns to work quarters
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