http://www.bushfarms.com/beeslayingworkers.htmActually a queenright have probably has about 30 to 60 laying workers:
See page 9 of "The Wisdom of the Hive"
"Although worker honey bees cannot mate, they do possess ovaries and can produce viable eggs; hence they do have the potential to have male offspring (in bees and other Hymenoptera, fertilized eggs produce females while unfertilized eggs produce males). It is now clear, however, that this potential is exceedingly rarely realized as long as a colony contains a queen (in queenless colonies, workers eventually lay large numbers of male eggs; see the review in Page and Erickson 1988). One supporting piece of evidence comes from studies of worker ovary development in queenright colonies, which have consistently revealed extremely low levels of development. All studies to date report far fewer than 1 % of workers have ovaries developed sufficiently to lay eggs (reviewed in Ratnieks 1993; see also Visscher 1995a). For example, Ratnieks dissected 10,634 worker bees from 21 colonies and found that only 7 had moderately developed egg (half the size of a completed egg) and that just one had a fully developed egg in her body."
If you do the math, in a normal booming queenright hive of 100,000 bees that's 70 laying workers. In a laying worker hive it's much higher.
If you have a serious laying worker hive half the bees are laying workers:
http://link.springer.com/article/10.1007/BF00299895"More than half of the bees in laying worker colonies have developed ovaries (Sakagami 1954)..."-- Reproduction by worker honey bees (Apis mellifer L.) R.E. Page Jr and E.H. Erickson Jr. - Behavioral Ecology and Sociobiology August 1988, Volume 23, Issue 2, pp 117-126
In a strong hive that has gone laying worker, that could be 30,000 laying workers...