Upvote:2
The company probably won't be happy with you, but No - not using a visa that you were granted will not have any negative impact. A visa is just being granted permission to visit the country. It's not an obligation to do so. The visa was paid for either way, so the government is happy. The worst that you may see is being asked why you didn't go if you do apply for a visa in the future. Even better, you've actually been given a visa so that may make things a bit easier applying in the future.