Okay, I read the great comments so far. I am going to go with Blondie, the first person to answer on page 1.
I don't think it is official but I am sure they are viewed as bad association and that jws should limit their contact with them except for spiritual activities, meetings, field service, conventions/assemblies; but nothing social. But I don't think jws are df'd themselves for associating with inactives unless something more serious is going on.
While I share that answer, I will go a wee bit stronger.
NO, Inactive ones are not shunned. It is not official policy. It is just being strongly hinted at, and will largely be ignored by family members as long as it is only hinted at. I don't think a study article will come out that does any more than the hinting.
If they say "Shun inactive ones," who determines who that is? Will people be in front of a judicial committee for not shunning them? If I go to one meeting every 6 months and turn in 1 hour of recruiting time every 6 months, am I just "irregular" and not "inactive," allowing my mother to ignore the shunning requirement?
The best they will do is to say that inactive ones who are a disruptive influence (or some similar term for "they SHOULD be DF'ed, but we haven't been able to do so) should be avoided.