The boaria is widely diffused in its two forms of cascinafatta and paghe.
Schiavanza, either simple or with a share in the crops, is a form of contract similar to the boaria, but applied principally to large holdings.
In Emilia both mezzadria and lease tenure are widely diffused in the provinces of Ferrara, Reggio and Parma; but other special forms of contract exist, known as the famiglio da spesa, boaria, braccianti obbligati and braccianti disobbligati.
The boaria is of two kinds.
If the tiller receives as much as 45 lire per month, supplemented by other wages in kind, it is said to be boaria a salario; if the principal part of his remuneration is in kind, his contract is called boaria a spesa.