In economics, non-accelerating inflation buffer employment ratio (NAIBER) refers to a systemic proposal for an in-built inflation control mechanism devised by economists Bill Mitchell and Warren Mosler, and advocated by Modern Money Theory as replacement for NAIRU (non-accelerating inflation rate of unemployment). The concept of NAIBER is related to the idea of a job guarantee aimed to create full employment and price stability, by having the state promise to hire unemployed workers as an employer of last resort (ELR).