That issue was squarely resolved in the case of MC Engineering, Inc. v. NLRC.[32] As in this case, the Court of Appeals had dismissed a special civil action for certiorari on account of the failure of the foreign principal to execute a separate verification and certification against forum shopping from that submitted by the local private employment agency. The holding of the Court in MC Engineering may very well apply to this case, thus: In the case at bar, the petition for certiorari filed by petitioners before the Court of Appeals contains a certification against forum shopping.  However, the said certification was signed only by the corporate secretary of petitioner MCEI.  No representative of petitioner Hanil signed the said certification.  As such, the issue to be resolved is whether or not a certification signed by one but not all of the parties in a petition constitutes substantial compliance with the requirements regarding the certification of non-forum shopping. xxxx In the case at bar, the Court of Appeals should have taken into consideration the fact that petitioner Hanil is being sued by private respondent in its capacity as the foreign principal of petitioner MCEI.  It was petitioner MCEI, as the local private employment agency, who entered into contracts with potential overseas workers on behalf of petitioner Hanil.  It must be borne in mind that local private employment agencies, before they can commence recruiting workers for their foreign principal, must submit with the POEA a formal appointment or agency contract executed by the foreign based employer empowering the local agent to sue and be sued jointly and solidarily with the principal or foreign-based employer for any of the violations of the recruitment agreement and contract of employment. Considering that the local private employment agency may sue on behalf of its foreign principal on the basis of its contractual undertakings submitted to the POEA, there is no reason why the said agency cannot likewise sign or execute a certification of non-forum shopping for its own purposes and/or on behalf of its foreign principal.   It must likewise be stressed that the rationale behind the requirement that the petitioners or parties to the action themselves must execute the certification of non-forum shopping is that the said petitioners or parties are in the best position to know of the matters required by the Rules of Court in the said certification. Such requirement is not circumvented and is substantially complied with when, as in this case, the local private employment agency signs the said certification alone.  It is the local private employment agency, in this case petitioner MCEI, who is in the best position to know of the matters required in a certification of non-forum shopping.[33]