Precarity is a precarious existence, lacking in predictability, job security, material or psychological welfare. The social class defined by this condition has been termed the precariat.
Léonce Crenier, a Catholic monk who had previously been active as an anarcho-communist may have established the English usage. In 1952 the term was documented by Dorothy Day, writing for the Catholic Worker Movement:
"True poverty is rare ... Nowadays communities are good, I am sure, but they are mistaken about poverty. They accept, admit on principle, poverty, but everything must be good and strong, buildings must be fireproof, Precarity is rejected everywhere, and precarity is an essential element of poverty. That has been forgotten. Here we want precarity in everything except the church. ... Precarity enables us to help very much the poor. When a community is always building, and enlarging, and embellishing, which is good in itself, there is nothing left over for the poor. We have no right to do this as long as there are slums and breadlines somewhere."
It is a term of everyday usage as Precariedad, Precariedade, Précarité, or Precarietà in a number of European countries, where it refers to the widespread condition of temporary, flexible, contingent, casual, intermittent work in postindustrial societies, brought about by the neoliberal labor market reforms that have strengthened management and weakened the bargaining power of employees since the late 1970s.
Precarity is a general term to describe how large parts of the population are being subjected to flexible exploitation or flexploitation (low pay, high blackmailability, intermittent income, etc.), and existential precariousness (high risk of social exclusion because of low incomes, welfare cuts, high cost of living, etc.) The condition of precarity is said to affect all of service sector labor in a narrow sense, and the whole of society in a wider sense, but particularly youth, women, and immigrants.