Slave men make surprisingly ergonomic office furniture.
Human slave chairs learn to adjust as the woman moves her body. This insures that the woman enjoys maximum comfort and minimal stress.
Human furniture objects require extensive training. Very painful training. The slave must be condition to endure hours of use. Only the harshest discipline can induce this steadiness. The slave must control all bodily functions since leaving position if forbidden until the end of the woman’s work period. (Some female executives employ slave chairs in pairs because of their very long workdays.)
Male slaves capable of serving as human furniture are rare. Uncommonly strong tendons are required if the slave chair is going to continue to function for a cost effective period.
There are breeding programs aimed at increasing the quantity of potential human slave chairs but have not yielded significant results.
When their utility as furniture ends, the slaves have no future use and are disposed of.