ISSUE: Whether the ADB is correct in invoking its immunity from suit.
FACTS: On January 27, 1993, private respondent initiated NLRC-NCR Case for his alleged illegal dismissal by Asian Development Bank and the latter's violation of the "labor-only" contracting law. Two summonses were served, one to the ADB and the other through the DFA. Forthwith, the ADB and the DFA notified respondent Labor Arbiter that the ADB, as well as its President and Office, were covered by an immunity from legal processes except for borrowing, guaranties or the sale of securities pursuant to the Agreement Establishing the Asian Development Bank (the "Charter") and the Agreement Between the Bank and the Government of the Philippines regarding the Banker's Headquarters (the "Headquarters Agreement). The Labor Arbiter took cognizance of the complaint on the impression that the ADB had waived its diplomatic immunity from suit. The ADB did not appeal the decision. Instead, the DFA referred the matter to the NLRC; in its referral, the DFA sought a "formal vacation of the void jugdgment".
DECISION: Yes. The stipulations of both the Charter and the Headquarter's Agreement establish that, except in the specified cases of borrowing and guarantee operations, as well as the purchase, sale and underwriting of securities, the ADB enjoys immunity from legal process of every form
RATIO DECIDENDI: The Bank's officers, on their part, enjoy immunity in respect of all acts performed by them in their official capacity. The granting of these immunities and privileges are treaty covenants ans commitments voluntarily assumed by the Philippine Government. Being an international organization that has been extended diplomatic status, the ADB is independent of the municipal law.