In the face of a huge diversity of opinions among contemporary researchers when it comes to
Keynesian thought, and recent permeation of strong neo-liberal concepts, such notions as “Keynesian
unemployment” or “Keynesian policy” do not carry any specific, concrete meaning any longer. New
Keynesian theories offer various definitions of unemployment and advise on economic policies, while
many New Keynesian models postulate the supremacy of the voluntary rather than involuntary
unemployment. What is more, those constructions which underlie involuntary unemployment
question long-term efficiency of demand policy. Examples of modern Keynesian constructions
referring to a broad neoclassical perspective concerning the unemployment phenomenon include
search theoretic models on the labour market, implicit contracts, NAIRU and hysteresis, or the New
Keynesian Phillips Curve