Labor Market Flows. Suppose that the law of motion for unemployment is given by 4,+1 - u, = s(1 – u,) – fu,. where u, denotes the unemployment rate at time t, s is the job separation rate and fis the job finding rate. (a) Solve for the steady-state unemployment rate. Explain what happens to the steady- state unemployment rate and the duration of unemployment if the job separation rate s increases. Suppose that the matching function is such that the job finding rate is given by f(0,) = A02, where 0, = v,lu, is the labor market tightness and v, is the vacancy rate at time t. Coefficient A %3D %3D cantures the efficienCy of the matching process

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Labor Market Flows
Suppose that the law of motion for unemployment is given by
441 - u, = s(1 – u,) - fu,,
where u, denotes the unemployment rate at time t, s is the job separation rate and fis the job
finding rate.
(a)
Solve for the steady-state unemployment rate. Explain what happens to the steady-
state unemployment rate and the duration of unemployment if the job separation rate s increases.
Suppose that the matching function is such that the job finding rate is given by f(e,) = A0!2,
where 0, = v,lu, is the labor market tightness and v, is the vacancy rate at time t. Coefficient A
captures the efficiency of the matching process.
(b) . -
'Jsing the steady-state unemployment rate and the functional form for f(0), derive the
Beveridge curve (i.e., express v, in terms of u,) and explain how v, and u, are related.
(c)
Suppose that there is free entry, i.e., firms post vacancies until the expected value of
Transcribed Image Text:Labor Market Flows Suppose that the law of motion for unemployment is given by 441 - u, = s(1 – u,) - fu,, where u, denotes the unemployment rate at time t, s is the job separation rate and fis the job finding rate. (a) Solve for the steady-state unemployment rate. Explain what happens to the steady- state unemployment rate and the duration of unemployment if the job separation rate s increases. Suppose that the matching function is such that the job finding rate is given by f(e,) = A0!2, where 0, = v,lu, is the labor market tightness and v, is the vacancy rate at time t. Coefficient A captures the efficiency of the matching process. (b) . - 'Jsing the steady-state unemployment rate and the functional form for f(0), derive the Beveridge curve (i.e., express v, in terms of u,) and explain how v, and u, are related. (c) Suppose that there is free entry, i.e., firms post vacancies until the expected value of
(c)
Suppose that there is free entry, i.e., firms post vacancies until the expected value of
posting a vacancy is equal to its cost: q(0,)J = c. Here, J is the value of a filled job and c is the cost
of posting a vacancy. Solve for the equilibrium labor market tightness 0 and the steady-state
unemployment and vacancy rates. Note: Given the functional form for f(0) above, you should be
able to find the functional form for q(0).
Now suppose that J is explicitly determined by firm profits (rather than taken as given as before).
Assume that the revenue generated by a worker-firm match is one and wage paid to the worker is
inversely proportional to the unemployment rate and is given by w(u) = 1/(1 + u). Thus, we can
express firm value as J(u) = 1- w(u) = 1 - 1/(1 +u).
(d)
*Use the free-entry condition and the Beveridge curve to find the equilibrium
unemployment rate in terms of model parameters for this new case where J(u) depends on u.
(e). .
How does the equilibrium unemployment rate depend on the matching efficiency
parameter A? How does wage depend on the matching efficiency parameter A? Provide intuition for
your answers.
Transcribed Image Text:(c) Suppose that there is free entry, i.e., firms post vacancies until the expected value of posting a vacancy is equal to its cost: q(0,)J = c. Here, J is the value of a filled job and c is the cost of posting a vacancy. Solve for the equilibrium labor market tightness 0 and the steady-state unemployment and vacancy rates. Note: Given the functional form for f(0) above, you should be able to find the functional form for q(0). Now suppose that J is explicitly determined by firm profits (rather than taken as given as before). Assume that the revenue generated by a worker-firm match is one and wage paid to the worker is inversely proportional to the unemployment rate and is given by w(u) = 1/(1 + u). Thus, we can express firm value as J(u) = 1- w(u) = 1 - 1/(1 +u). (d) *Use the free-entry condition and the Beveridge curve to find the equilibrium unemployment rate in terms of model parameters for this new case where J(u) depends on u. (e). . How does the equilibrium unemployment rate depend on the matching efficiency parameter A? How does wage depend on the matching efficiency parameter A? Provide intuition for your answers.
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