But Global Witness' research suggests that this results in job ads being targeted to users based on gender stereotypes.
And in some cases, human rights advocates say, the biases that appear to be shown by Facebook's ad system may exacerbate other disparities.
Global Witness targeted the ads to adult Facebook users of any gender who resided in, or had recently visited, the chosen countries.
Certain roles were less strongly skewed — a package delivery job ad, for example, was shown to 38% women users in the Netherlands.
In December, Real Women in Trucking filed its EEOC complaint alleging that Facebook's job ads algorithm discriminates based on age and gender.
Persons:
Naomi Hirst, Clara Wichmann, Ashley Settle, Settle, Meta, Linde, Ireland —, Caroline Leroy, Blanvillain, Fondation des Femme, Pat de Brún, de Brún, —, Brún, Facebook, Sheryl Sandberg, Sandberg, Peter Romer, Friedman, " Romer, Facebook's, Hirst, Meera Senthilingam, Seth Fiegerman, Carlotta Dotto, Carolina Moscoso, Tal Yellin, Damian Prado, David Blood, Gabrielle Smith
Organizations:
CNN, Facebook, Global, Facebook's, des, UK, Human Rights, Commissioner's, Meta, US, Employment, Commission, Real Women, Trucking, Ad, Ireland, Fondation des, Amnesty, Employment Opportunity Commission, University of Southern, Real, Data
Locations:
Europe, France, Netherlands, Canada, United States, India, South Africa, United Kingdom, Indonesia, University of Southern California