By 1878, he had already become a regular contributor to dailies and periodicals, mainly in Masis, of which he was an editor (1884-1893) alongside famed Armenian writer and politician Krikor Zohrab.
Upon his return to Constantinople with new impressions and information, he wrote a series of articles entitled Ughevorutiun i Kovkasia (Ուղեւորութիւն ի Կովկասիա, Travels in the Caucasus).
In 1884, alongside other intellectuals, he launched a new daily called Arevelk (Արեւելք, Orient) with the aim of promoting closer relations between Eastern and Western Armenians.
[2] Arevelk, which was a literary and political newspaper with democratic tendencies, attracted a number of young writers who would form the core of the school of realism.
[2] Along with being a writer, Arpiar Arpiarian was a political activist and revolutionary who supported reforms in the Ottoman Empire in light of Sultan Abdul Hamid II's treatment of the Armenian population.
In 1889, Arpiarian joined the Social Democrat Hunchakian Party and founded the Ararat Society with a group of youths to spread education in the Ottoman provinces.
In London, he attempted to publish two monthly reviews, Mart (Մարտ, Battle) and Nor Kyank (Նոր Կեանք, New life) in which Levon Pashalian would contribute, both papers being sponsored by the Hunchakians.
In Cairo, he edited the literary monthly review Shirag (Շիրակ) and contributed in the local paper, Lusaper (Լուսաբեր, Lucifer: light-bearer).