After the restoration of democracy in 1983, Meyer was awarded the nation's highest honor, the Order of the Liberator General San Martín, by the new president.

In Argentina Meyer also led the congregation Comunidad Bet El and founded Seminario Rabínico Latinoamericano, a Conservative Jewish rabbinical school in Buenos Aires that has trained generations of Spanish-speaking rabbis.

After receiving ordination in 1958, Meyer was called as a rabbi to the Congregación Israelita de la República Argentina (Templo Libertad), where he worked for two years.

He worked with the Israeli government to free the renowned journalist, Jacobo Timerman, who had been persecuted, imprisoned and subjected to extended house arrest.

[1] Meyer additionally founded the Movimiento Judío por los Derechos Humanos, an organization that played a key role in the fight for human rights in Argentina.

[4][5] In 1983, when democracy was restored in Argentina, the newly elected president, Raúl Alfonsín, recognized the work of Rabbi Meyer by awarding him the highest Argentine decoration, Order of the Liberator General San Martín.

[2] The challenging theology espoused by Rabbi Meyer, the spiritually uplifting religious services, an agenda that emphasized social action as a central part of the synagogue's principles, ecumenical work with Christian and Muslim clergy, and a leading role in the peace movement in regard to the Arab–Israeli conflict, led to the rapid growth of the congregation.