whose contributions were important in macroeconomics, although not certified with the Nobel
Prize.
Professionals analyzed the relationship between inflation and unemploymentand have gone
through two stages after the Second World War and recently entered into a third phase.
The first step consisted in accepting the hypothesis associated with the great economist A.W.
Phillips, that there is a stable relationship between unemployment and negative rate of change in
wages - high levels of unemployment would be accompanied by declining wages, while low levels
of unemployment imply rising wages.
The changes were inter-conditional on the pay of the changes to prices, thus allowing an
increase in productivity which took effect in the sense of an excess price higher than the cost of
wages generated by a perfectly constant factor.
Unfortunately for this hypothesis, additional evidence was not consistent with it. Ratings on
empirical Phillips curve relationship highlighted were unsatisfactory. More important, the inflation
rate that seemed to be consistent with a certain level of unemployment has remained fixed:
according to the circumstances of the period after the Second World War, when governments
sought to promote the employment of total employment, unemployment however experienced
increases in some countries and even unexpectedly varied between countries. Looking at it from
another point of view, inflation rates which were previously associated with low levels of
unemployment were held in conditions of high levels of unemployment phenomenon which
involved simultaneous high inflation and high unemployment reached gradually to public attention
and professional It is classified as inflation speculated.
Milton Friedman and other economists were sceptical from the beginning about the validity of a
stable Phillips curve, more theoretical reasons than the empirical ones. They argued that what
mattered for the workforce did not constitute wages in dollars or pounds, but real wages - goods
and services that could be purchased from wages. Unemployment fell would mean, really, pressure
for higher real wages, but real salaries as could rise even if nominal wages would be lower if it
were also supported by lower prices. Similarly, high unemployment would mean real wage
pressure for a small but real wages might be small even if nominal wages would be high, and the
prices were so high that the effects would be evident.
There is no need to assume a stable Phillips curve to explain the appearance accelerating trend
of inflation to reduce unemployment. This can be explained by the impact of unforeseen changes in
demand in markets characterized nominal (implicit or explicit) of long-term commitments, both in
terms of capital and labour. Long-term commitments on employment can be explained by
employers’ costs to get information about those who wish to hire and costs for those who want to
embark on various opportunities. Furthermore, individual specific capital is the amount an
employee in the eyes of the employer and lead to a greater appreciation of its value in appreciation
of other employers.If anyone could predict growth of around 20 percent per year in prices, then this
prediction could be represented in future salaries, real wages would behave exactly as they would
have behaved if everyone would have predicted that they will not there are price increases, and
there is no reason for the 20 percent of the inflation rate to be associated with a different level of
zero unemployment. An unanticipated change is very different, especially in terms of long-term
commitments, particularly as a result of imperfect knowledge of the effects it would generate over
time. Long-term commitments means, firstly, that there cleansings markets simultaneously, but
only delay adjustment of both prices and quantities involved in the request or tender; secondly, that
the commitments are contingent not only on current prices but also prices that are expected to be on
during the engagement.Together with S.E. Phelps, Milton Friedman has developed a differentiated
alternative hypothesis that short-term effects and long-term changes early on nominal demand.
Starting from several stable positions of the prices was triggered, for example, an unanticipated
acceleration of both, the demand nominal aggregates. This will be handled by each manufacturer as
an unexpectedly favourable demand for its product. In an environment where demand changes for
different goods have always held, the producer will not know if the change occurs especially for
him or comprises all economic agents. Rationally, he will interpret the change in point of view and
react as such, trying to produce more to sell at a price which he perceives to be higher than the
price at which it is expected that it will sell future goods. Will be willing to pay higher wages than
he was willing to pay them before, especially to attract a larger workforce. Higher nominal wages
“Ovidius” University Annals, Economic Sciences Series
Volume XVII, Issue 1 /2017