It is a question often asked:
what do Ricardo and Marx have to say about interpersonal inequality of income?
The answer is, strictly speaking, very little. In writings of neither Ricardo nor
Marx does inequality in personal incomes feature at all, and I even think that the
concept of what we call “interpersonal inequality” or “size distribution of
incomes” does not appear.
The reason why this is
the case is both simple and revealing. Ricardo and Marx were concerned with functional
(between factors of production) distribution of income, that is with the
distribution of net product between workers, capitalists and landlords (the
three big classes introduced by Adam Smith). In Ricardo, this concern was such
that he wrote on page 1 of The Principles, the famous sentence that the
principal problem of political economy is to study the distribution between “proprietors
of land, the owners…of capital and the labourers”. Actually, the entire book is
organized around that idea. Marx likewise (with a few exceptions) dealt with
functional distribution only.
The omission of interpersonal
distribution is revealing of the type of society that Ricardo and Marx had in
mind. To see this consider the decomposition of a standard inequality measure
like Gini coefficient. It is decomposed into three components: the gap between
mean incomes of different groups into which we break a society, inequality
within each of these groups, and the “overlap” term which is non-zero when some
members of a mean-poorer group have higher incomes than some members of a
mean-richer group.
Now, consider a society which
is strictly segregated into classes such that (say) capitalists are rich and workers
are poor. Interpersonal inequality looked at through the lenses of a Gini coefficient
will not include the overlap term because of a tacit assumption shared by both
Ricardo and Marx that all capitalists are richer than all workers (and if landlords
are included that they are richer than the other two groups). If in addition,
all workers are paid subsistence, the within-group inequality for them will be
zero. Capitalists and landlords may be differentiated depending on how much capital
or land each possesses but because of their small population size, they will
not add much to inequality (Gini within each group is weighed by the group
income and population shares).
The bottom line is that most
of interpersonal inequality will boil down to the gaps in mean incomes between
the two (or if landlords are included, three) classes. Studying only that is not
different from being concerned with income shares of the three groups, that is, with functional income distribution. Thus
the question of income inequality between individuals dissolves into the question
of income shares of landlords, capitalists and workers. In such a society, it
is indeed of little practical import to
go beyond functional distribution.
This picture which is, I
think, basically accurate is a bit simplified, especially as far as Marx is concerned.
In Ricardo workers are seen as a homogeneous mass facing capitalists such that every
increase in the wage rate implies a direct reduction in profit: “a rise of wages,
from the circumstance of laborer being more liberally rewarded, or from the
difficulty of procuring necessities on which wages are expended, does not…produce
a rise in prices but has a great effect in lowering profits” (Principles,
Chapter I, Section VII, p. 31). Or even more clearly: “There is no adequate
reason for a fall in profit but a rise in wages, and…it may be added the only
adequate and permanent cause for the rise of wages is the increasing difficulty
of providing food and necessities” (Chapter XXI, p. 197).
Note that the increase in
the wage comes either from an improvement in (what we now call) real wage or
from greater cost of providing subsistence which, while keeping real wage
unchanged, raises the share that belongs to labor, and reduces that of capital.
Throughout are not only the interests of workers and capitalists directly
opposed but workers are supposed to be paid subsistence, and when, in very
unusual circumstances, they are not, the Malthusian checks kick in to drive them
back to subsistence (Chapter V).
In Marx, the opposition between
workers and capitalists is similar but the distinction between simple and
complex labor introduces some variability among workers’ wages even if Marx seldom
speaks of it. In fact, workers with greater skills will earn more. The rationale
is very similar to “human capital” approach. In principle, workers are paid the
amount necessary for the reproduction of their class. That could be subsistence
only for unskilled workers who are plentiful; for skilled workers the costs
of reproduction may be above subsistence because it costs more to produce a
skilled than an unskilled worker: “[the difference in wages] can be reduced to
the different values of labour-power itself, that is, its varying production
costs” (Theories of Surplus Value; also Rosdolsky, pp. 515ff); or “all
labor of a higher or more complicated character than average labor is…labor
power whose production has cost more labor and time and which therefore has a
higher value than unskiled or simple labor” (Capital, vol. I, Chapter III.
Section 7). In contemporary terms we could say that the skilled wage must
compensate for the foregone earnings during the period of training and for the
cost of additional education.
Income inequality among
workers thus moves us a bit further from a narrow functional distribution of
income. If in addition, we allow for the differentiation of capital stock among
capitalists which is implicitly present in both Ricardo and Marx, within-capitalist
income Gini will be positive too.
The situation present in
today’s capitalism but not common in classical capitalism, namely that (i)
a worker may be richer than a capitalist, or (ii) that people could have both
labor and property incomes (even if the rich still depend mostly on property incomes), is not envisaged by either Ricardo or Marx. They
must have thought both of these possibilities remote and thus not worth complicating
the analysis. Possibility (i) existed as some (few?) members of liberal or
scientific professions, say doctors or engineers, probably commanded higher
incomes than petty capitalists. Possibility (ii) existed only among the
self-employed but they could rightly be considered remnants of a past social
order and not representative of capitalism. The British social tables, whether
in their original form or as they had been reworked by Peter Lindert
and Jeffrey Williamson, or more recently by Bob
Allen, can be read as the rankings of different non-overlapping classes where
the lion’s share of inequality is explained by income gaps between these classes.
In other words, we do not lose much in our estimate of total inequality if we
ignore both the overlap component, and assume all members of a given class to
have same incomes.
It was thus left to people
like Pareto, who were, at the end of the 19th century, witnessing less
segregated and less hierarchical societies and were lucky to have access to tax
data, to move the study of inequality from functional to interpersonal.
David
Ricardo, The Principles of Political Economy and Taxation, Dover Publication,
2004.
Roman
Rosdolsky, The Making of Marx’s ‘Capital’, Pluto Press, 1977.