That could be good news for plan sponsors anxious to take advantage of the new medium in communicating plan benefits, investment education, and financial planning tools to workers.
Some 9.5 million blue-collar households were online in March, up from 5.2 million a year ago, according to Nielsen//NetRatings market research.
The second fastest growing Internet group was homemakers, which grew 49% over the past year to 2.5 million households.
Service workers, who increased at a 37% rate, made up the third fastest growing Internet user group by occupation in March.
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