These are among the lowest entitlements in the OECD, and the fact that paternity leave is sponsored by an employer rather than the government likely reduces fathers' take-up. Participation in ECEC in Mexico has grown enormously over the past decade, especially following the introduction of compulsory preschool. Children aged three- through five-years-old are now enrolled in preschool at rates comparable to the OECD average. Notwithstanding this progress, demand for ECEC still far outpaces supply, especially for children under age three, and quality of care remains a concern. Mexico's share of young women not in employment, education, or training (so-called "NEETs") is 35% - the second-highest rate in the OECD. Young women are nearly four times as likely as young men to be NEETs in Mexico.