  This work aims to test the Verdoorn Law, with the alternative specifications
of (1)Kaldor (1966), for five regions (NUTS II) Portuguese from 1986 to 1994
and for the 28 NUTS III Portuguese in the period 1995 to 1999. Will, therefore,
to analyze the existence of increasing returns to scale that characterize the
phenomena of polarization with circular and cumulative causes and can explain
the processes of regional divergence. It is intended to test, even in this
work, the alternative interpretation of (2)Rowthorn (1975) Verdoorn's Law for
the same regions and periods. The results of this work will be complemented
with estimates of these relationships to other sectors of the economy than the
industry (primary and services sector), for each of the manufacturing
industries operating in the Portuguese regions and for the total economy of
each region (3)(Martinho, 2011).
