The ILPS facilitated the unity, cooperation and coordination of democratic and anti-imperialist organizations such as trade unions and organizations of women, youth, peasants, teachers, health workers, journalists, writers, scientists, technologists, lawyers and other professionals, as well as popular movements and campaigns.
Sa pamamagitan ng ILPS ay nagkaisa at nagtulungan ang mga demokratiko at anti-imperyalistang organisasyon tulad ng mga unyon at mga organisasyon ng kababaihan, kabataan, magsasaka, guro, manggagawang pangkalusugan, mamamahayag, manunulat, syentista at teknolohista, mga abugado at iba pang propesyunal, gayundin ang mga popular na kilusan at kampanya.