Here are a list of resources we use or have used to learn more about Labor Day:
I love making our unit studies using the free printables from Homeschool About.
There’s a list of Labor Day printable activities from Apples 4 the Teacher.
Print some Labor Day crafts and activities from Enchanted Learning.
Homeschool Helper Online has a Labor Day Unit.
Hands of A Child has a Labor Day Project Pack
CurrClick has a big list of Labor Day resources to choose from.