Adultery, cruel and inhuman treatment, abandonment for a year or longer, incarceration for three years or longer, legal separation for at least a year, irretrievable breakdown of the marriage (no-fault divorce), and failure to fulfill contractual obligations are among the grounds for divorce recognized in New York. The most prevalent type of divorce is no-fault, which requires documentation that the marriage has been irretrievably shattered for at least six months prior to filing.