Is it legal to work from outside USA for a US employer who has employed you on H1B?

[rohan221]

Am on H1-B visa and working in USA. I have Canada's Permanent Residency. Hence, can I work from Canada for the same employer without informing the employer? So, I have H1B, I move to Canada, and then work from there for 2 years and then return to US, so on port of entry, the immigration officer won't question me why I was out for 2 years keeping my H1-B visa with the same employer?
Also, are the below points correct?
-I will have to pay taxes in US and Canada
-I will not inform employer, so I will keep making US salary and keep converting it to CAD to live in Canada. This will not be an issue for 2 years

[rkk09]

Hi,
Without informing to Employer, you are travelling abroad and getting paid actual salary will make more problem to you. Your Employer is your H1B Sponsor and they have a right to control and supervise you..
Therefore, it is really wrong and complicated idea.
Thanks