H-1B visa holder travels abroad (Canada) for work sometimes; is an H-1B amendment required for change of address or location abroad?

The bottom line is there is no law that requires you to have an H-1B if you are working from a country other than the USA. Now if you go to Canada and you are a citizen of India and you do not have any work visa in Canada you will probably need a work visa in Canada. But sitting in Canada you could work for a U.S. company. Also the intermittent H-1B allows you to visit the U.S. for a few days as well as months. This is even allowed under the law. I therefore do not see any problem in working from abroad and coming to the USA intermittently.

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