In a message dated 7/23/2004 6:35:11 PM Central Standard Time, [EMAIL PROTECTED] writes:
A per unit drop of labor input of 40% in 30 years is running at an annual improvement factor of more than 10% and what is built into the union contract is an annual improvement factor of 3% increase in wages. The 3% annual improvement factor (AIF) was actually lost during years of concessionary contracts - 1980-1993,  and "re-won" in the mid 1990s.
Correction
 
10% should be one percent. Contract negotiations took place every three years until changed in the late 1990s to a five year contract.

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