In monetary- and production-based societies, informal childcare is seen in families who do not have enough funds to finance placing their children in a more expensive child care facility. A study done by Roberta Iversen and Annie Armstrong explains that due to long and irregular working hours of working parents, low- socioeconomic families are more likely to utilize informal childcare. Those low income families are also more apt to work longer hours on an irregular and inflexible schedule, which ultimately makes using a childcare facility, that has regular business hours, unlikely.
Spain provides paid maternity leave of 16 weeks with 30-50% of mothers returning to work (most full-time) after this, thus babies 4 months of age tend to be placed in daycare centers. Adult-infant ratios are about 1:7-8 first year and 1:16-18 second year. Public preschool education is provided for most children aged 3–5 years in "Infantil" schools which also provide primary school education.