When the Industrial Revolution started there was no legislation about working conditions in mills, factories or other industrial plants. Factories spread very quickly, the owners of these working places needed lots of workers and they were being cheap with their pay. They wanted to pay them less instead of giving them the money they worked hard for and earned. Children were the ones that were taken advantage of because they didn't know any better. The children weren't educated enough to argue or complain. They were used to squeeze into small spaces that the adults couldn't get between. Children ended up working in all types of industries. Children weren’t attending school because education in the early 19th century was not mandatory and school was expensive. Parents let their children work in mills and factories because it brought money to their family. Now children have Saturday jobs or part time jobs after school. They have jobs to help their family out or to save money for themselves or for college. These jobs are carefully controlled and the government has made laws saying how long children can work and what types of jobs they can and cannot have and what the minimum age for working is.
http://www.schoolshistory.org.uk/IndustrialRevolution/womenandchildren.htm