The difference between women's and men's gender roles has been considerably eroded. Men do less paid work and women more, and the variation in hours is now insignificant. Automation and improved logistics and planning along with the advent of Work Share have reduced the total hours of paid work done per person. Since there has also been a decline in the birthrate due to reduced fertility, women are less likely to have children or care for them for a significant period. There are also nurseries which take children from quite an early age.