I was an elder for 21 years and sad to say many, many good hard working brothers that had family and were working their butts off to provide for them, make meetings but were not able to put no more than 4-5 hours in service they would get no priviliges, not even carrying mikes, reading at the book study or watchtower was out of the question.
If there was any question about the wife or children ...no priviliges.
Looking back it was a very sad situation , looking down on many good hard working brothers and labeling them "weak".
I should say when some of these brothers were needed for their skills in construction at the KH or such at the building ( Romeoville assembly hall) in Chicago the society had no problems in using them.