
Alan Manning explains monospony in labour markets
30 Dec 2019 Leave a comment
in applied price theory, economics of information, history of economic thought, job search and matching, labour economics, labour supply Tags: job search, search and matching

Pay slip data shows wage cuts are common
09 Nov 2019 Leave a comment
in applied price theory, business cycles, econometerics, economic history, job search and matching, labour economics, labour supply, macroeconomics, unemployment Tags: search and matching
Monopsony has a monopoly on ambiguity and sexing up search frictions as exploitation too
17 Jul 2019 Leave a comment
in applied price theory, applied welfare economics, comparative institutional analysis, economic history, labour economics, labour supply, managerial economics, organisational economics, personnel economics Tags: job search, labour market search, monopsony, search and matching

I’d go beyond Kuhn to argue Manning’s excellent book should be titled “Random matching with ex-ante wage posting in motion”
17 Jul 2019 Leave a comment
in labour economics, labour supply Tags: job search, labour market search, monopsony, search and matching

The Nobel Lecture: Equilibrium in the Labour Market with Search Frictions
14 Jul 2019 Leave a comment
in business cycles, labour economics, labour supply, macroeconomics, unemployment, unions, welfare reform Tags: job search, labour market search, search and matching
Robert Lucas on unemployment
30 Jun 2019 Leave a comment
in applied price theory, business cycles, labour economics, labour supply, macroeconomics, monetary economics, Robert E. Lucas, unemployment Tags: search and matching

Robert Lucas on the voluntary and involuntary unemployment distinction
05 Oct 2016 Leave a comment
in job search and matching, labour economics, labour supply, macroeconomics, Robert E. Lucas, unemployment Tags: involuntary unemployment, job search, search and matching
Robert Lucas in a famous 1978 paper argued that all unemployment was voluntary because involuntary unemployment was a meaningless concept:
“The worker who loses a good job in prosperous time does not volunteer to be in this situation: he has suffered a capital loss. Similarly, the firm which loses an experienced employee in depressed times suffers an undesirable capital loss.
Nevertheless the unemployed worker at any time can always find some job at once, and a firm can always fill a vacancy instantaneously. That neither typically does so by choice is not difficult to understand given the quality of the jobs and the employees which are easiest to find.
Thus there is an involuntary element in all unemployment, in the sense that no one chooses bad luck over good; there is also a voluntary element in all unemployment, in the sense that however miserable one’s current work options, one can always choose to accept them.”
I agree that we all make choices subject to constraints. To say that a choice is involuntary because it is constrained by a scarcity of job-opportunities information is to say that choices are involuntary because there is scarcity. Alchian said there are always plenty of jobs because to suppose the contrary suggests that scarcity has been abolished.
Lucas elaborated further in 1987 in Models of Business Cycles:
A theory that does deal successfully with unemployment needs to address two quite distinct problems. One is the fact that job separations tend to take the form of unilateral decisions – a worker quits, or is laid off or fired – in which negotiations over wage rates play no explicit role.
The second is that workers who lose jobs, for whatever reason, typically pass through a period of unemployment instead of taking temporary work on the ‘spot’ labour market jobs that are readily available in any economy.
Of these, the second seems to me much the more important: it does not ‘explain’ why someone is unemployed to explain why he does not have a job with company X. After all, most employed people do not have jobs with company X either. To explain why people allocate time to a particular activity – like unemployment – we need to know why they prefer it to all other available activities: to say that I am allergic to strawberries does not ‘explain’ why I drink coffee.
Neither of these puzzles is easy to understand within a Walrasian framework, and it would be good to understand both of them better, but I suggest we begin by focusing on the second of the two.





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