G.R. No. 136888 - Philippine Charter Insurance Corp. vs. Chemoil Lighterage Corp.

On September 21, 1996, the University of Santo Tomas Faculty Union (USTFU) sent a letter to its members informing them of a General Assembly (GA) scheduled for October 5, 1996, with an agenda that included the election of union officers.
At that time, the incumbent president of the USTFU was Atty. Eduardo J. MariAo, Jr.

On October 2, 1996, Fr. Rodel Aligan, O.P., Secretary General of the University, issued a memorandum permitting the Faculty Clubs to convene on October 4, 1996.
Faculty members attended the convocation, during which a group known as the Reformist Alliance conducted an election that resulted in the Gamilla Group being elected as the new officers and directors of the USTFU.
Following the convocation, a letter dated October 4, 1996 was sent to the UST administration, proclaiming the Gamilla Group as the new leadership of the union.
As a consequence, two groups emerged as claimants to the USTFU’s leadership:

The Gamilla Group, which held the convocation and secured election results.
The MariAo Group, led by the incumbent, contesting the legitimacy of the election.

On October 8, 1996, the MariAo Group filed a complaint for Unfair Labor Practice (ULP) against the University of Santo Tomas (UST) with the Arbitration Branch of the National Labor Relations Commission (NLRC).
Shortly after, on October 11, 1996, a separate complaint was filed with the DOLE’s Office of the Med-Arbiter seeking the nullification of the Gamilla Group’s election.
On December 3, 1996, the Gamilla Group entered into a Collective Bargaining Agreement (CBA) with UST that replaced an earlier agreement valid from June 1, 1993, to May 31, 1998.

On January 27, 1997, representatives of the Gamilla Group, accompanied by the barangay captain and the Chief Security Officer of UST, padlocked the USTFU office. An armed security guard was subsequently posted at the office.
On February 11, 1997, the med-arbiter issued a resolution nullifying the election of the Gamilla Group and ordering them to cease performing union duties.
The decision was appealed to the Director of the Bureau of Labor Relations (BLR), and later, the appeal reached the Court of Appeals (CA), which upheld the NLRC and the med-arbiter’s resolutions.

The NLRC, through resolutions dated November 28, 2003, and July 29, 2005, affirmed the labor arbiter’s decision dismissing the USTFU’s complaint for lack of merit, finding no sufficient evidence that UST committed ULP.
The Court of Appeals also affirmed the NLRC’s ruling, prompting the petition for certiorari under Rule 45, which forms the basis of the present case.

Organizing and facilitating a convocation that resulted in the offhand election of the Gamilla Group, allegedly under circumstances favorable to one faction over the other.
Entering into negotiations and executing a Collective Bargaining Agreement (CBA) with the Gamilla Group despite the ongoing intra-union dispute regarding the legitimate representation of the USTFU.
Assisting or endorsing the physical takeover of the USTFU office by padlocking it and posting security personnel, which might indicate interference with union affairs.

Whether the petitioner (USTFU) met the burden of proving, with substantial evidence, that the acts of UST amounted to ULP.

The issue of whether the evidence presented—including affidavits, certifications, and photographs—was sufficient to establish that the actions of the respondents (UST and allied officials) interfered with the union’s self-organization.
Whether respondents’ actions, taken in the context of their duty to bargain collectively, could be interpreted as constituting an unlawful interference with the rightful process of union leadership determination.

Whether the respondents, in negotiating with the Gamilla Group, could be faulted for not conducting an inquiry into the legitimacy of the union election amidst the intra-union controversy.