General usage:
* The construction project required a lot of labor.
* The labor union is negotiating a new contract.
* Labor costs are a significant expense for businesses.
* The labor of love is the most rewarding kind.
Specific usage:
* The labor of childbirth can be physically demanding.
* The farmers are busy with the labor of harvesting their crops.
* The labor shortage is making it difficult to find qualified workers.
* The labor movement has been fighting for workers' rights for decades.
Figurative usage:
* The labor of writing a novel is a long and arduous process.
* The labor of love is a journey that's worth every step.
* The labor of my hands helped build this house.
The word "labor" can be used as a noun, verb, or adjective, so it's versatile in its usage.