labor force participation rateThe labor force participation rate is a measure of an economy's active workforce. The crisis that concerns Eberstadt is the relentless downward spiral of the labor force participation rate (LFPR) of prime-age American males between 1965 and. Definition: Key result areas or KRAs refer to the general metrics or parameters which the organisation has fixed for a specific role. Looking for the definition of LFPR? Find out what is the full meaning of LFPR on Abbreviations. You must create an account to continue watching · Definition · Information Needed for Calculation · LFPR Formula · Unlock Content · Example.