The previous part of the series introduced a short-run relationship between prices and output, P(Y), that is in keeping with a Kaleckian or Keynesian understanding of demand-led economies. According to this view, within the economy’s capacity limits, output reflects demand while prices reflect cost. So long as supply conditions remain unaltered, variations in demand are met with variations in production at stable prices. But when spending goes beyond the economy’s current capacity to respond in quantity terms, price pressures emerge from the demand side.
So far, in considering a simplified economy with a job guarantee, the focus has been on the demand-determined behavior of output and employment. Prices, in this exercise, have simply been taken as given on the grounds that they are not causally significant in the process. This approach does not require prices to remain constant, although, for given supply conditions, they may well do so over a fairly wide range of output for reasons to be discussed. Nor does it require that prices are necessarily unrelated to output; only that the direction of causation in any aggregate relationship between the two mostly runs from output to prices rather than the other way round. But once attention turns to the issue of price stability, which is of considerable interest to job-guarantee proponents, it becomes relevant to entertain a possible short-run relationship between output and prices. This will provide a basis for identifying potentially price-stabilizing aspects of a job guarantee in the next part of the series.
The model, in its present form, is short run in nature. It concerns an economy for which total employment, within-sector productivity and productive capacity are all taken as given. Variations in total output are achieved by workers transferring between two broad sectors that have differing productivity. In considering this economy, discussion has touched on aspects of a steady state and system behavior outside the steady state. It has been supposed, in the event of exogenous shocks, that the broader economy (sector b) drives the adjustment process through its reactions to excess demand or excess supply, with the job-guarantee program (sector j) absorbing or releasing workers as appropriate to maintain total employment at its given level. A tendency for the economy to move toward the steady state has been illustrated with reference to a Keynesian cross diagram (part 2) and a description of the growth behavior of actual output and demand whenever the system is outside the steady state (part 3). Attention now turns to the conditions under which this tendency to a steady state is operative, or, in other words, to the question of dynamic stability.
The model as outlined so far implies particular dynamics. These dynamics are driven by the quantity response of the broader economy (sector b) to mismatches in supply and demand. With the size of the labor force, level of total employment, within-sector productivity and the economy’s productive capacity all taken as exogenously given, the quantity response of sector b requires a change in the sector’s level of employment. The response of sector b induces an inverse response from the job-guarantee sector (sector j), which adjusts as required to maintain full employment at all times. The resulting variations in the composition of employment between higher-productivity sector b and lower-productivity sector j enable the adjustment of total output to total demand.
As a preliminary exercise, it may be instructive to modify the familiar Keynesian cross diagram to include the effects of a job guarantee within a simple short-run framework. The diagram includes two key schedules. The first is a 45-degree line showing all points for which actual expenditure equals actual income. The second is a line with lesser slope depicting the level of planned expenditure (total demand) at each level of income. Under appropriate conditions, the two schedules intersect at a steady-state level of income.
The job guarantee as proposed by Modern Monetary Theorists would provide a publicly funded job with defined wage and benefits to anyone who desired one, with public spending on the program varying automatically and countercyclically in response to take-up of positions. In a downturn, workers who lost their jobs would have the option of accepting the job-guarantee offer. As the economy recovered, some workers would receive better offers elsewhere. By design, the job-guarantee provider would not compete on wages in an attempt to retain such workers. Rather, the program would provide a stable wage floor, serving as a nominal price anchor for the economy. Periodically it would be appropriate to revise the program wage, but these wage adjustments would reflect factors such as trend improvements in the economy’s average productivity or distributional considerations rather than fluctuations in demand. Earlier posts have considered various macro aspects of a job guarantee using a model developed within the familiar income-expenditure framework. The present post is the first in a six-part series attempting a more systematic – and in some ways simpler – treatment of the topic. Results presented earlier continue to hold, as the basic model remains the same. The model itself is very simple but amenable to extension.
Of the various criticisms leveled at a combined ‘job or income guarantee‘, ones appealing to fairness usually go along the lines that it would be unfair for healthy individuals outside the workforce to receive an income while others are occupied in jobs. In considering this objection, a number of points come to mind:
In some recent posts, a job guarantee has been considered within the income-expenditure framework. One post in particular suggested a possible conceptualization of the dynamics of the model. It was shown that these dynamics are consistent with the model’s steady state requirements. Demonstrating this took a fair bit of algebra, which may have obscured for some readers the simplicity of the actual model. Much of the algebra was only needed for the specific purpose of verifying that the suggested dynamics are valid. At least for the version of the model presently under consideration, this task has now been accomplished. It is justifiable just to focus on the basic model which is really quite simple while still allowing for somewhat complicated behavior. Below, an example of this behavior is provided. First, though, it seems worth putting things into context with a quick summary of the key variables and parameters.
The first section of the previous post outlined basic steady state relationships in a simplified economy with a job guarantee. There are various ways of expressing the same relationships that shed light on what is going on in the model. Here, a few ways of thinking about the levels of total income and job guarantee spending are noted.
A job guarantee would be a standing offer of a publicly funded job, with spending on the program adjusting automatically and countercyclically in response to take-up of positions. The likely feedback between spending on the program and activity in general is interesting and can be considered within the income-expenditure framework. In what follows, the standard model is modified to find the steady state levels and compositions of income and employment and other key variables. Attention then turns to how the system might behave outside a steady state. A way of conceptualizing the dynamics of the system is suggested and formulas developed to describe that behavior. The suggested dynamics are shown to be consistent with steady state requirements.