Labor is also our “property(s)”. An easier way to think of it is our physical or mental “sweat equity.”  

Just like any other type of property, our labor is a result of “how” we exercise our original rights. It is a collection of our many past actions.    

As we collect “labor property(s)”, it would be unwise of us to “unknowingly gift” it away to another by accident.   

This is the reason why we “secure” our labor property(s), also known as protecting our labor.