(CBSNEWS) – Monday won’t be business as usual for employers, thanks to a very cosmic event.

The first solar eclipse visible in the U.S. since 1979 will take place in the middle of the workday, which may cost employers as much as $694 million in lost productivity, according to global outplacement and coaching firm Challenger, Grey & Christmas, which analyzed wage and employment data from the Bureau of Labor Statistics.

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States and cities in the path of the eclipse, which stretches from Oregon to South Carolina, could suffer productivity losses of almost $200 million. Experts are warning businesses to expect increased absenteeism as millions of people are projected to travel to see the eclipse or take a break from work, which will cause productivity to plummet.

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Even companies located in areas with a partial eclipse may have a “manic Monday.” Challenger, Grey estimates that the eclipse will cost the Chicago area $28 million, for example. Experts are encouraging employers to make the best of the situation by holding viewing parties and other team-building activities.

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