When the Ingalls family was traveling in their covered wagon from the Big Woods of Wisconsin to Independence, Kansas there was no such thing as Labor Day. Though when you consider the sunup to sundown effort put in by pioneering families, you have to think they sure needed a day off. Perhaps that's part of why keeping the Lord's Day sacred was so important--it not only gave them time to compose their souls, but also to rest their weary bodies.
Charles Ingalls was a farmer--among other things--so the Industrial Revolution might not have meant much to him; but American workers demanded reprieve from long hours and poor working conditions. And thus, the first Labor Day parade was held in September 1882, where workers vocalized the issues they had with employers in the hopes that it would make a difference.
It would be over a decade before Labor Day became an official holiday, but American workers, like the pioneers before them, made their mark on America. Today we celebrate those contributions.