His father had been a member of the Haitian senate and a statesman of note, so that young Léger began to take an active part in the politics of his country at an early age.

Upon his return to Haiti, he resumed the practice of law at Port-au-Prince, and also became editor-in-chief of an influential political journal.

In 1890 he was made chief of a division in the department of foreign affairs, and in 1892 became one of the founders of the Société de Législation of Port-au-Prince, later becoming its president.

While serving in this post, he was appointed as the delegate from Haiti to the Second Pan American Congress, and thereafter made vice chairman of the committee on regulations for the Third International Conference.

[2] Upon his retirement from public office Léger resumed his legal and literary work, for which he gained renown that extended far beyond Haiti.