N.Y. Lab. Law § 713
Nothing in this article shall be construed so as to interfere with, impede or diminish in any way the right of employees to strike or engage in other lawful, concerted activities, except that it shall continue to be unlawful for the employees of a non-profitmaking hospital or residential care center, or their representatives, or any other persons to engage in or to induce or encourage, or to attempt to engage in or to induce or encourage any strike, work stoppage, slowdown or withholding of goods or services by such employees or other persons at such hospital or residential care center, provided, however, that nothing herein shall be construed to prohibit publicity, other than picketing, for the purpose of truthfully advising the public that a grievance or dispute, as defined in section seven hundred sixteen of this article, exists at such hospital or residential care center, as long as such publicity does not have the effect of inducing any persons to withhold goods or services at such hospital or residential care center.
It shall be unlawful for a non-profitmaking hospital or residential care center to institute, declare or cause, or to attempt to institute, declare or cause any lockout of the employees of such hospital or residential care center.
N.Y. Lab. Law § 713