Although the movement did spread to many other countries such as Belgium and Italy, the French were always the most prominent.
The movement was an attempt to "rediscover the masses" of industrial class workers who had become largely disaffected with the church.
In 1944, the first worker-priest missions were set up in Paris, and then later in Lyons and Marseille. The Church hoped, by "putting young priests into secular clothes and letting them work in factories, to regain the confidence of the French working class, which [had] almost completely abandoned the Catholic faith."
In 1950, Pius XII in an apostolic exhortation on the priestly life expressed "reservations and suspicions of the worker-priests … Loew's May 1951 report defending the movement, written to Giovanni Montini (future Pope Paul VI), the assistant Cardinal Secretary of State, was not well-received.
Many of the priests joined in campaigns for improved pay and conditions and the movement became prominent in the industrial unrest of 1952 and 1953. This resulted in the factory owners complaining to the Catholic Church that the priests were being divisive by supporting the unions.
The French bishops informed the worker-priests that they must return to their parishes. About 50, however, chose to stay on at their work.
Moreover, by 1953, of some 90 priests, 10 had married, and about 15 were working with the communists. "… the Pope sent verbal orders that the movement be suppressed, but the French cardinals managed to persuade the Pope to allow the worker-priests to continue 'in principle,' after some major changes in the setup."
In November 1953, all worker priests were recalled and required to leave their work and unions. In 1954, Loew acquiesced to the Vatican and quit his job; he then established the Saints Peter and Paul Mission to Workers, which trained priests from among the working class. Loew then travelled to Africa, worked in the favelas of Sao Paolo from 1964 to 1969, and then established the School of Faith in Fribourg, Switzerland. The theology of the Worker-Priest is in part contained within Loew's publications: Les dockers de Marseille (1944), Un mission proletarienne (1946), Les Cieux ouverts: chronique de la mission Saints Pierre et Paul (1971), and Face to Face with God: the Bible's Way to Prayer (1977).
In 1963, priests were allowed to return to the industrial workplaces, and in the 1990's there were about 2,000 priests of the workers mission in France, although they were ageing in line with the wider population of Catholic priests in that country.
On the advise of his mentor Cardinal Sapieha, Karol Wojtyla (future Pope John Paul II) and fellow Polish priest studying in Italy, Stanislaw Starowieyski, travelled to France and Belgium to acquaint themselves with the worker-priest movement. Wojtyla, who had also performed hard labor during his time as a seminarian, reportedly admired the worker-priests. On his return in 1947, Wojtyla wrote a piece on the worker-priests for the Tygodnik Powszechny. Wojtyla wrote: "Father Loew came to the conclusion that the [Dominican] white habit by itself does not say anything any more today."
A similar movement emerged in the Church of England in the 1960s.