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Spam Costs Keep Rising For Business: Page 2 of 2

Workers battling spam underestimate the cost it has on their employers. Respondents' estimates of the annual employee cost of spam to their employers ranged from $25 to $1,000, with an average of $220. That's way off the mark, Nucleus says, suggesting a gap between perception and reality.

Nucleus surveyed employees at 82 major companies in May and discovered they received on average more than twice as much spam a day--29 E-mails--than the 13 E-mails they received last July, when researchers last queried workers.

The researchers calculated productivity loss at 3.1% by estimating that users spent an average of 30 seconds to handle each spam message. To get the $1,934 figure, Nucleus multiplied 3.1% by 2,080 hours--52 40-hour weeks--at a labor cost of $30 an hour.

Last July, Nucleus estimated that spam cost companies $874 a year per employee, with an annual productivity loss of 1.4%.