What were the 4 main problems facing the worker in the late 1800's and why they want to form labor unions?

the worker had to face a shortened life span, (most workers didn't live past

40) life threatening injuries, hellish work hours,(18 hours a day or more) and exposure to harsh conditions like poisonous chemicals, extreme heat and cold, bad equipment, ect...

they wanted to form labor unions to put a stop to these harsh working environments and there were no rules or guidelines to be followed so they hoped that labor unions would set boundaries for them.