La. Stat. tit. 23 § 846
No restraining order or temporary or permanent injunction shall be granted in a case involving or growing out of a labor dispute, except on the basis of findings of fact made and filed by the court in the record of the case prior to the issuance of such restraining order or injunction; and every restraining order or injunction granted in a case involving or growing out of a labor dispute shall include only a prohibition of such specific act or acts as may be expressly complained of in the petition filed in such case and expressly included in the findings of fact made and filed by the court as provided herein. The restraining order, or temporary or permanent injunction shall be binding only upon the parties to the suit, their agents, servants, employees and attorneys, or those in active concert and participation with them, and who shall by personal service or otherwise have received actual notice of the same.
La. R.S. § 23:846