Violations of act; quitting employment; picketing; intimidation

It shall be unlawful for any person, firm or corporation, or for any association of persons, to do or perform any act forbidden, or to fail or refuse to perform any act or duty enjoined by the provisions of this act, or to conspire or confederate with others to do or perform any act forbidden, or to fail or refuse to perform any act or duty enjoined by the provisions of this act, or to induce or intimidate any person, firm or corporation engaged in any of said industries, employments, utilities or common carriers to do any act forbidden, or to fail or refuse to perform any act or duty enjoined by the provisions of this act, for the purpose or with the intent to hinder, delay, limit, or suspend the operation of any of the industries, employments, utilities or common carriers herein specified or indicated, or to delay, limit, or suspend the production or transportation of the products of such industries, or employments, or the service of such utilities or common carriers: Provided, That nothing in this act shall be construed as restricting the right of any individual employee engaged in the operation of any such industry, employment, public utility, or common carrier to quit his employment at any time, but it shall be unlawful for any such individual employee or other person to conspire with other persons to quit their employment or to induce other persons to quit their employment for the purpose of hindering, delaying, interfering with, or suspending the operation of any of the industries, employments, public utilities, or common carriers governed by the provisions of this act, or for any person to engage in what is known as "picketing," or to intimidate by threats, abuse or in any other manner, any person or persons with intent to induce such person or persons to quit such employment, or for the purpose of deterring or preventing any other person or persons from accepting employment or from remaining in the employ of any of the industries, employments, public utilities, or common carriers governed by the provisions of this act.