The supply curve of labor is LEAST probable to be “backward bending” for: (1) an individual worker. (2) the economy as a whole. (3) highly specialized industries which are main employers of dedicated PhDs hired only after ten years of experience. (4) the market for delivery truck drivers in a huge urban area. (5) the market for highly trained oil well fire-fighters in Wyoming.
Can anybody suggest me the proper explanation for given problem regarding Economics generally?