Ku sii wad qodobkan - Alecu Constantinescu wuxuu sii waday inuu la shaqeeyo qaar ka mid ah xubnihii hore ee PSDMR ee weli u heellan arrimaha shaqaalaha, sida I. C. Frimu, Alexandru Ionescu, Ştefan Gheorghiu, iyo Mihail Gheorghiu Bujor. Dhamaadkii 1902 wuxuu u ambabaxay Paris, France, si kastaba ha ahaatee wuxuu xiriir la yeeshay dhaqdhaqaaqa shaqaalaha Romania, mararka qaarkood wuxuu u diraa maqaallo wargeyska bulshada "1 Mai" ("May Day"). Markii uu ku soo laabtay Romania sanadkii 1904, wuxuu la shaqeeyay Frimu iyo Bujor xagga dib u habeynta ururka shaqaalaha ee Romania. Bishii Ogosto 1906, Shirkii ururada shaqaalaha iyo goobaha bulshada ayaa Constantinescu u doortay xoghayaha guddiga guud ee ururada shaqaalaha, ururka ugu horreeya ee guud ee shaqaalaha Romania. Isla muddadaas wuxuu ku biiray guddiga tifaftirka "România Muncitoare", isagoo noqday tifaftiraha fulinta. Wargeysku wuxuu ahaa goobtii ugu weyneyd ee bulshada ee waqtigaas, wuxuuna gacan ka geystay abaabulka dhowr shaqo joojin. Alecu Constantinescu laftiisu wuxuu bilaabay 1906 safar uu ku marayo magaalooyinka Romania, isagoo gacan ka geysanaya abaabulka shaqaalaha maxalliga ah, isagoo rajeynaya inuu abuuro urur shaqaale qaran oo mideysan. Sanadkii 1907, intii lagu jiray kacdoonka beeraleyda Romania
wuxuu ku sugnaa Paşcani, gudaha Moldova, mid kamid ah xarumaha mucaaradka. Sababo la xiriira dhaqdhaqaaqiisa ka dhex jira shaqaalaha maxalliga ah ee taageeraya beeraleyda ayaa loo xiray eedeyn ah inuu ku xadgudbay boqortooyada, si kastaba ha noqotee maxkamadda Fălticeni ayaa ka baxday eedeymaha dhowr toddobaad ka dib.