Consider the following one-sided labor search model. - Time is continuous, index by t = [0, ∞). - There exists a worker. - There are two states for the worker at each point in time: employed or unemployed. - While the worker is unemployed, the worker receives unemployment benefits at a rate b (i.e., if the worker is unemployed for a time interval At, the total value of unemployment benefits that the worker receives for the interval equals bAt.) While unemployed, the worker also receives a job offer with a Poisson arrival rate u (i.e., the number of job offers in a given time interval is a random variable following a Poisson process with a Poisson arrival rate µ.) If a job offer arrives, the worker accepts it and becomes employed. If not, the worker remains unemployed. - While the worker is employed, the worker receives wages at a rate w and gets fired with a Poisson arrival rate X. If the worker is fired, the worker becomes unemployed. Otherwise, the worker remains employed. - The worker receives the following lifetime utility from wages and unemployment benefits: E[[* e-Padt] Ε

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Chapter1: Making Economics Decisions
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Consider the following one-sided labor search model.
- Time is continuous, index by t = [0, ∞).
- There exists a worker.
There are two states for the worker at each point in time: employed or unemployed.
- While the worker is unemployed, the worker receives unemployment benefits at a rate b (i.e., if the worker is unemployed for a
time interval At, the total value of unemployment benefits that the worker receives for the interval equals b▲t.) While
unemployed, the worker also receives a job offer with a Poisson arrival rate µ (i.e., the number of job offers in a given time
μ
interval is a random variable following a Poisson process with a Poisson arrival rate µ.) If a job offer arrives, the worker accepts
it and becomes employed. If not, the worker remains unemployed.
- While the worker is employed, the worker receives wages at a rate w and gets fired with a Poisson arrival rate X. If the worker
is fired, the worker becomes unemployed. Otherwise, the worker remains employed.
- The worker receives the following lifetime utility from wages and unemployment benefits:
where
if the worker is employed at time t
if the worker is umemployed at time t
and p > 0 and w > b > 0. p, w, and b are constant. E[.] returns the mean of the random variable inside the square bracket.
at
=
∞
E[/™ e-made]
Е
W
b
Transcribed Image Text:Consider the following one-sided labor search model. - Time is continuous, index by t = [0, ∞). - There exists a worker. There are two states for the worker at each point in time: employed or unemployed. - While the worker is unemployed, the worker receives unemployment benefits at a rate b (i.e., if the worker is unemployed for a time interval At, the total value of unemployment benefits that the worker receives for the interval equals b▲t.) While unemployed, the worker also receives a job offer with a Poisson arrival rate µ (i.e., the number of job offers in a given time μ interval is a random variable following a Poisson process with a Poisson arrival rate µ.) If a job offer arrives, the worker accepts it and becomes employed. If not, the worker remains unemployed. - While the worker is employed, the worker receives wages at a rate w and gets fired with a Poisson arrival rate X. If the worker is fired, the worker becomes unemployed. Otherwise, the worker remains employed. - The worker receives the following lifetime utility from wages and unemployment benefits: where if the worker is employed at time t if the worker is umemployed at time t and p > 0 and w > b > 0. p, w, and b are constant. E[.] returns the mean of the random variable inside the square bracket. at = ∞ E[/™ e-made] Е W b
1.
Derive the Bellman equation for the worker when employed, and the Bellman equation for the worker when unemployed in the
stationary equilibrium. (You do not need to solve the Bellman equations.)
(Hint: consider a discrete-time approximation of the Bellman equations with an arbitrarily small time interval between periods, and
then take the limit as the time interval goes to zero.)
Notes:
- Answer the Bellman equations in continuous time.
2.
Assume that p = 2, µ = 5, λ = 3, w = 4, and b = 1. By solving the Bellman equations, derive the numerical value of the value
function for the worker when employed in the stationary equilibrium.
3.
Given the parameter values assumed in Question 2 above, derive the numerical value of the value function for the worker when
unemployed in the stationary equilibrium.
Transcribed Image Text:1. Derive the Bellman equation for the worker when employed, and the Bellman equation for the worker when unemployed in the stationary equilibrium. (You do not need to solve the Bellman equations.) (Hint: consider a discrete-time approximation of the Bellman equations with an arbitrarily small time interval between periods, and then take the limit as the time interval goes to zero.) Notes: - Answer the Bellman equations in continuous time. 2. Assume that p = 2, µ = 5, λ = 3, w = 4, and b = 1. By solving the Bellman equations, derive the numerical value of the value function for the worker when employed in the stationary equilibrium. 3. Given the parameter values assumed in Question 2 above, derive the numerical value of the value function for the worker when unemployed in the stationary equilibrium.
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