Microsoft and Chevron are among 13 of the largest global companies who have asked their employees to work remotely as a precaution against the novel coronavirus - here's the full list.

OMD, a media agency, temporarily closed its London office and asked everyone to work from home after an employee, who had recently had a connecting flight in Singapore, reported flu-like symptoms.

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A Chevron office, also in London, asked its several hundred employees to work from home after an employee was tested for coronavirus. "Our primary concern is the health and safety of our employees and we are taking precautionary measures to reduce their risk of exposure," the company said in a statement shared with Fortune.

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Crossrail, a new company working on a new public transport system, located in the same building as OMD and Chevron in London, also asked employees to work from home.

Over in Tokyo, a Japanese cosmetic company called Shiseido told 8,000 employees to work from home because of growing concerns over the outbreak.

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Dentsu, a prominent Japanese advertising agency, told all of its employees in the Tokyo headquarters to work from home after one employee tested positive for the virus.

NTT, a Japanese system integration company, encouraged 200,000 employees to work from home to keep the virus from spreading.

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Japanese conglomerate Hitachi also allowed employees to work from home. The company had recently reported a fall in sales by 33% between April 2019 to December 2019 and the CFO said the outbreak "made it even more difficult" for global sales.

Over in China, about 60% of employees at Beijing Chuckong Technology, a game developing company, are currently working from home because of the outbreak.

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DDD Online is an augmented reality company in China where employees are currently working from home.

Tuputech, an image recognition company, also has its employees working remotely. Li Mingqiang, the chief executive told Globe and Mail that the "impact is huge" and that efficiency is down by 30% for hardware developers and designers.

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Tencent, a Chinese video game company, has asked its staff in Mainland China to work from home.

Microsoft's team in mainland China is also currently working from home because of the outbreak. The Hong Kong team continues to come into the office.

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Over in Singapore, an enterprise software company called Industrial and Financial Systems advised all of its employees to work from home indefinitely because of the virus.