Some interesting studies worth reading released in recent weeks.
First: Lombardi, Marco J. and Van Robays, Ine, paper "Do Financial Investors Destabilize the Oil Price?" (May 20, 2011). ECB Working Paper No. 1346. Available at SSRN: http://ssrn.com/abstract=1847503
The study results "suggest that …financial activity in the futures market can signi…ficantly affect oil prices in the spot market, although only in the short run. The destabilizing …financial shock only explains about 10 percent of the total variability in oil prices, and shocks to fundamentals are clearly more important over our sample.
Indeed, looking at speci…fic in the second half of 2008 can be mainly explained by a substantial fallback in economic points in time, the gradual run-up in oil prices between 2002 and the summer of 2008 was mainly driven by a series of stronger-than-expected oil demand shocks on the back of booming economic activity, in combination with an increasingly tight oil supply from mid 2004 on. Strong demand-side growth together with stagnating supply were also the main driving factors behind the surge in oil prices in 2007-mid 2008, and the drop in oil prices activity following the …nancial crisis and the associated decline in global oil demand. Since the beginning of 2009, rising oil demand on the back of a recovering global economy also drove most of the recovery in oil prices.
However, we …find that …financial investors did cause oil prices to signifi…cantly diverge from the level justi…ed by oil supply and demand at speci…c points in time. In general, inefficient …financial activity in the futures market pushed oil prices about 15 percent above the level justi…fied by (current and expected) oil fundamentals over the period 2000-mid 2008, when the volume of crude oil derivatives traded on NYMEX quintupled. Particularly in 2007-2008, destabilizing fi…nancial shocks aggravated the volatility present in the oil market and caused oil prices to respectively over- and undershoot their fundamental values by signi…ficant amounts, although oil fundamentals clearly remain more important."
Note - emphasis above and below is my own.
Another interesting study I came across is the Blumkin, Tomer, Sadka, Efraim and Shem-Tov, Yotam, paper "Labor Migration and the Case for Flat Tax" (May 31, 2011). CESifo Working Paper Series No. 3471. Available at SSRN: http://ssrn.com/abstract=1855947
The study examines the case for a flat tax in the presence of migration threats - in other words, in the case of open labour markets. The study considers a tax competition game between two identical countries populated with individuals with two skill-levels.
"We compare between a non-linear tax regime and a flat tax system and demonstrate that in the backdrop of a high-skill migration threat (due to a reduction of the migration costs faced by high-skill individuals), the re-distributive advantage of a non-linear system over a linear (flat) one is significantly mitigated." In other words, when high skills workers are mobile across borders (as in the case of advanced economies, and especially small open economies like Ireland), progressive taxation's main benefit over flat taxes (its actual redistributive 'progressivity') is reduced significantly.
"In the presence of migration, and in sharp contrast to the autarky case, a coordinated shift to a flat system (with its entailed administrative advantages), still allowing for fiscal competition between countries (by maintaining the countries' sovereignty over the welfare state generosity), is not too welfare-reducing; and when administrative costs are taken into account, such a shift may prove to be mutually beneficial for both countries."
"... taking into account the administrative gains associated with a flat system (relative to a non-linear tax regime), even when both countries may choose a general non-linear tax regime, an equilibrium where both do set a flat system in place is likely to form." So for two systems starting from a non-flat progressive taxes base, open labour policies will lead to a flattening of the tax systems.
The authors "...also confirm the race-to the-bottom hypothesis that suggests that migration reduces the extent of redistribution." This point should be salient for Ireland. As we all know, Ireland is currently experiencing very substantial outflow of skills, especially at the higher (internationally marketable) segment of skills distribution. This means that this trend alone will tend to lead to a reduction in the redistributive effectiveness of the existent taxation system progressivity. Thus, there may be serious grounds to consider flatter (not more progressive) taxes as the means to actually mitigate the effects of lost progressivity. Some food for thought.
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