H1B Visa Site visit - DHS

[ashaykamat]

Hi

I got an email from my office security that DHS officer is there for Site Visit.
I was working from home on that day.
My LCA has both my office address and home address listed on it.
I never have encountered a site visit during my 6 yrs on H1b and no one from my office on H1b has too.
Was just wondering whether not working from office will result in NOIR?
Should I have any problems or are the site visits normal?

Thanks.