Schedule Performance Index - Labor Unit

Hi,

Does anyone tell me how can labor unit schedule performance index be greater than 1

G
Gary Whitehead 👤 Member for 17 years 2 months

Rafael,

 

Very true that SPI will always trend to 1 when the project is late, but this flaw in the measure will never cause the SPI to become greater than 1, which is what the original query is regarding.

R
Rafael Davila 👤 Member for 22 years 3 months

Are you referring to cost performance or schedule performance?

From the time of the development of Earned Value Management (EVM) indicators, it has been known that the schedule indicators are flawed and exhibit strange behavior over the finalthird of the project, when performance is poor.  

http://www.earnedschedule.com/Docs/Schedule%20is%20Different.pdf

Best regards,

Rafael

G
Gary Whitehead 👤 Member for 17 years 2 months

If you've done more work than you planned to do in your baseline, your SPI will be >1.

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