What is Work And Labor?

Legal Definition
In actions of assumpsit, it is usual to put in a count, commonly called a common count, for work and labor done, and materials furnished by the plaintiff for the defendant; and when the work was not done under a special contract, the plaintiff will be entitled to recover on the common count for work, labor, and materials. 4 Tyr. R. 43; 2 C. & M. 214. Vide Assumpsit; Quantum meruit.
-- Bouviers Law Dictionary
Legal Definition
The name of one of the common counis in actions of assumpsit, bsing for work and labar done and materials' furnished by the plaintiff for the defendant.
-- Black's Law Dictionary