New York Consolidated Laws, Labor Law - LAB § 704-b. Unfair labor practices

a. lockout its laborers. The term “lockout” shall mean, for the purposes of this section, a refusal by an agricultural employer to permit farm laborers to work as a result of a dispute with such farm laborers or employee organization representing such farm laborers that affects wages, hours and other terms and conditions of employment of such farm laborers, provided, however, that a lockout shall not include a termination of employment for good cause that does not involve such laborers exercising any rights guaranteed by this article;

b. refuse to continue all the terms of an expired agreement until a new agreement is negotiated;

c. discourage union organization or to discourage an employee from participating in a union organizing drive, engaging in protected concerted activity, or otherwise exercising the rights guaranteed under this article.