Human Rights Official I've NEVER Actually Seen the Kardashian Factory

12/21/2011 2:20 PM PST

The human rights activist who claims Kardashian clothing items are made by child slaves in China just told TMZ ... he's never actually been to the factory where the Kardashian gear is made.

Charles Kernaghan -- the head of the Institute for Global Labor and Human Rights -- called in to "TMZ Live" today and said because he's been investigating factories in China for years ... he feels comfortable ASSUMING the place is a sweat shop.

As we previously reported, the Kardashian family and the people connected with the clothing lines are adamant -- they have been taking measures against child labor for a while and are extremely confident no human rights violations have occurred.