Article · February 005 Source: RePEc citations 35 reads 4,815 authors

Figure 5
) and Mexico (
Figure 6
) started from much lower productivity 
levels than the U.S., but the two countries exhibited quite different trends. In Korean manufacturing 
the trends in comparative productivity and relative labour cost levels have moved strongly together. 
Already by the end of the 1980s, Korea’s ULC level in manufacturing had reached the U.S. level, and 
it moved even beyond the U.S. during the early 1990s. The economic collapse of the Asian economies 
as a result of the financial crisis led to a strong depreciation of the Korean won, improving its ULC 
position relative to U.S. manufacturing at the end of the 1990s. Meanwhile Korean manufacturing 
productivity has continued to catch up with the U.S. level. Although the manufacturing productivity 
level in Korea remains considerably lower than in the U.S., the gap in productivity has been reduced 
from 90%-points in 1980 to only 60%-points in 2003. 
In Mexico (
Figure 6
), manufacturing labour productivity and labour compensation has 
continuously deteriorated relative to the U.S.. Comparative productivity levels in manufacturing fell 
from about 25% of the U.S. level in 1980 to only 10% in 2002. Part of the widening in the 
productivity gap is due to the rapid acceleration in U.S. productivity growth, but labour productivity 
in Mexican manufacturing also declined slightly in absolute terms. The unit labour cost level in 
Mexican manufacturing has remained below the U.S. level virtually throughout the period 1980-2002. 
But recently it approached the U.S. level very closely as the relative decline in productivity went 
together with a slight rise in labour cost levels relative to U.S. manufacturing. 
As discussed above, productivity, labour compensation and unit labour cost can also be 
measured for the aggregate economy. 
Figures A3 to A8
show the series for the aggregate economy 
which may be compared to those for manufacturing in figures 1 to 6. On the whole, labour 
productivity levels relative to the U.S. are higher for the aggregate economy than for manufacturing. 
This indicates that productivity levels in non-manufacturing industries – in particular in service 
industries – are generally closer to the U.S. level than in manufacturing. In the EU-15, the gap 
between manufacturing and non-manufacturing productivity has significantly increased since 1980, as 
the manufacturing sector stayed at approximately 80% of the U.S. productivity level whereas 
productivity in the aggregate economy improved more than 90% of the U.S. level in 1995 (although 
the aggregate productivity level has declined somewhat since 1995). In Japan the differences between 
manufacturing and non-manufacturing productivity levels relative to the U.S. has declined, as 
manufacturing has caught up more rapidly with the U.S. than non-manufacturing industries in Japan.
16
16 In this light it is also useful to compare the change in labour productivity, labour compensation and 
unit labour cost between the aggregate economy and manufacturing. Figure A2 in the appendix shows 
that unit labour cost for the aggregate U.S. economy has increased much faster (at almost 90% 
between 1980 and 2002) than in manufacturing (at only 10%). This is mainly due to the much slower 

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Relative levels of labour compensation for the aggregate economy have also generally been 
closer to the U.S. level than labour compensation levels in manufacturing. However, there are 
differences between the various countries or country groups with important implications for the unit 
labour cost position. For example, manufacturing unit labour cost levels in the EU-15 have increased 
more relative to the U.S. than those for the aggregate economy. This implies that the manufacturing 
sector in Europe has become less competitive in terms of labour cost per unit of output compared to 
the rest of the economy. In contrast the competitiveness position in Japanese manufacturing has 
improved relative to the rest of the economy. In Korea the ULC level in manufacturing worsened 
considerably during the early 1990s, but since the financial crisis at the end of the 1990s it recovered 
faster than for the aggregate the economy. Despite relatively low productivity levels in Mexican 
manufacturing, the sector is much more competitive relative to the U.S. than the non-tradable sectors 
of the economy. 
In summary, the analysis in this section has shown that even within the group of most 
advanced countries in the world economy (which are all members of the OECD), there are significant 
differences between countries and country groups in the comparative performance of labour 
productivity, labour compensation and unit labour costs. In general there is a greater stability in 
relative levels of labour productivity than in relatively levels of labour compensation. Still, when 
taking account of the impact of short term changes in the nominal exchange rates, labour 
compensation levels tend to move in tandem with productivity levels, so that international differences 
in unit labour costs are smaller then differences in labour cost and productivity.
Still, there remain significant differences in unit labour cost levels even in a tradable sectors 
such as manufacturing. In addition to the short term exchange rate movements, such differences may 
be partly related to differences in industrial structure. The latter issue will be addressed in some more 
detail in the Section 4. Some of the differences may also be caused by remaining measurement issues. 
For example, even though the measure of labour compensation in the national accounts is the most 
comprehensive, including income taxes and social security contributions, the precise administration of 
such administrative costs may lead to differences between countries. Moreover the imputation of 
labour cost for self-employed on the basis of compensation of salaried employees can introduce 
significant errors in the estimation. Such problems may increase when low income countries are 
included in the comparison, which will be discussed in more detail in Section 5.