Can your employer pop in your house unannounced insisting on checking himself if you are really sick?

[AspiringFilmWriter]

Isn't this a form of harassment or something? My younger sister's Lebanese employer just dropped by unannounced insisting to see my sister so he could check himself if she is really sick, for almost half an hour, he kept on insisting even though my dad told him again and again that she is resting!

So annoying. Is there any employment law against this? We're from Alberta.

Thanks!