His working efficiency will go down and eventually he will make no contribution to the company.

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The most valuable contribution we in IT can make is to get the company's intellectual property to the forefront of whatever we do.

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The first is to make a company contribution equal to at least 3% of each employee's compensation, regardless of whether the employee contributes.

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Mr. Ebersman told some bankers that he is skeptical over what contribution investment banks could make to a Facebook IPO, since the company is so highly sought after by major investors, said people familiar with the matter.

WSJ: Facebook Targets Huge IPO

Brain drains are usually a bad thing, but the latest exodus of veterans may make more of a contribution to Google than they would have if they were rich and bored inside the company.

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"The efficiency and sustainability of the new furnace will also make a major contribution to our efforts to create an 'all-weather' company in Europe, " said Mr Kohler.

BBC: Wales