P.R. Laws tit. 25, § 285s
The private detectives and agencies covered by this chapter shall not render the services defined in § 285a of this title in cases involving conflicts among laborers or labor-management disputes, or where a petition for election has been filed. Neither shall they render said services to an employer with whom a labor union has negotiated a collective agreement for the rendering of equal services, or when, upon expiration of a collective agreement, the parties are negotiating a new agreement.
The testimony of private detectives shall not be admitted in court on matters about which they have obtained information as a result of services rendered in violation of the prohibition established in this section; neither the oral testimony of any person who has learned of the facts on which he is testifying while acting as agent, attorney or collaborator or by instruction of private detectives; nor any documentary or objective evidence likewise obtained.
History —June 29, 1965, No. 108, p. 289, § 20, eff. July 1, 1965.