[manephelien]

It depends on what you're trying to measure. IQ doesn't say much, and IQ test results can vary depending on alertness level, physical condition (if you've spent the previous night spewing your guts out with a stomach flu you won't do yourself any justice) etc. A general IQ test isn't the best, but some sort of aptitude tests, of which the IQ test may be a small part, are common these days.

I would only use IQ tests to weed out the below average intelligence people in non-manual tasks, but I wouldn't require a manager to have a membership in Mensa, say. Many people with extremely high IQs have a very low EQ. I know I'd far rather work with a people person who isn't afraid to ask his or her co-workers when they're unsure about something than a hyper-smart know-it-all who thinks the sun shines out of his orifices.