I remember reading an article about this. I think the "be" form distinguishes between current and habitual/regular action. He working. ==> He is working right

I remember reading an article about this. I think the "be" form distinguishes between current and habitual/regular action. He working. ==> He is working right now. He be working. ==> He works regularly./He has a steady job. Or maybe it's the other way around; I read the article a long time ago.