Unfair labor practices of employees

It shall be an unfair labor practice for an employee individually or in concert with others: (1) To coerce or intimidate an employee in the enjoyment of the employee's legal rights, including those guaranteed in section 377-4; (2) To coerce, intimidate, or induce any employer to interfere with any of the employer's employees in the enjoyment of their legal rights, including those guaranteed in section 377-4, or to engage in any practice with regard to the employer's employees which would constitute an unfair labor practice if undertaken by the employer on the employer's own initiative; (3) To violate the terms of a collective bargaining agreement; (4) To refuse or fail to recognize or accept as conclusive of any issue in any controversy as to employment relations the final determination of the board or of any tribunal of competent jurisdiction; (5) To cooperate in engaging in, promoting, or inducing picketing (not constituting an exercise of constitutionally guaranteed freedom of speech), boycotting or any other overt act accompanying a strike unless a majority in a collective bargaining unit of the employees of an employer against whom such acts are primarily directed have voted by secret ballot to call a strike; (6) To hinder or prevent, by mass picketing, threats, intimidation, force, or coercion of any kind the pursuit of any lawful work or employment, or to obstruct or interfere with entrance to or egress from any place of employment, or to obstruct or interfere with free and uninterrupted use of public roads, streets, highways, railways, airports, or other ways of travel or conveyance; (7) To engage in a secondary boycott; or to hinder or prevent by threats, intimidation, force, coercion, or sabotage, the obtaining, use, or disposition of materials, equipment, or services; or to combine or conspire to hinder or prevent, by any means whatsoever, the obtaining, use, or disposition of materials, equipment, or service. Nothing herein shall prevent sympathetic strikes in support of those in similar occupations working for other employers in the same craft; (8) To take unauthorized possession of property of the employer or to engage in any concerted effort to interfere with production except by leaving the premises in an orderly manner for the purpose of going on strike; (9) To fail to give the notice of intention to strike provided in section 377-12.