administrative rules and regulations must be published, except those which are merely interpretative in nature...

Furthermore, LBC 55 is void on account of its lack of publication, in violation of our ruling in Tañada vs. Tuvera⁸where we held that:

xxx. Administrative rules and regulations must also be published if their purpose is to enforce or implement existing law pursuant to a valid delegation.

Interpretative regulations and those merely internal in nature, that is, regulating only the personnel of an administrative agency and the public, need not be published. Neither is publication required of the so-called letters of instruction issued by administrative superiors concerning the rules or guidelines to be followed by their subordinates in the performance of their duties.

Respondent COA claims that publication is not required for LBC 55 inasmuch as it is merely an interpretative regulation applicable to the personnel of an LGU. We disagree. In De Jesus vs. Commission on Audit⁹ where we dealt with the same issue, this Court declared void, for lack of publication, a DBM circular that disallowed payment of allowances and other additional compensation to government officials and employees. In refuting respondent COA's argument that said circular was merely an internal regulation, we ruled that:

On the need for publication of subject DBM-CCC No. 10, we rule in the affirmative. Following the doctrine enunciated in Tañada v. Tuvera, publication in the Official Gazette or in a newspaper of general circulation in the Philippines is required since DBM-CCC No. 10 is in the nature of an administrative circular the purpose of which is to enforce or implement an existing law. Stated differently, to be effective and enforceable, DBM-CCC No. 10 must go through the requisite publication in the Official Gazette or in a newspaper of general circulation in the Philippines.

In the present case under scrutiny, it is decisively clear that DBM-CCC No. 10, which completely disallows payment of allowances and other additional compensation to government officials and employees, starting November 1, 1989, is not a mere interpretative or internal regulation. It is something more than that. And why not, when it tends to deprive government workers of their allowance and additional compensation sorely needed to keep body and soul together. At the very least, before the said circular under attack may be permitted to substantially reduce their income, the government officials and employees concerned should be apprised and alerted by the publication of subject circular in the Official Gazette or in a newspaper of general circulation in the Philippines – to the end that they be given amplest opportunity to voice out whatever opposition they may have, and to ventilate their stance on the matter. This approach is more in keeping with democratic precepts and rudiments of fairness and transparency. (emphasis supplied)

In Philippine International Trading Corporation vs. Commission on Audit¹⁰, we again declared the same circular as void, for lack of publication, despite the fact that it was re-issued and then submitted for publication. Emphasizing the importance of publication to the effectivity of a regulation, we therein held that:

It has come to our knowledge that DBM-CCC No. 10 has been re-issued in its entirety and submitted for publication in the Official Gazette per letter to the National Printing Office dated March 9, 1999. Would the subsequent publication thereof cure the defect and retroact to the time that the above-mentioned items were disallowed in audit?

The answer is in the negative, precisely for the reason that publication is required as a condition precedent to the effectivity of a law to inform the public of the contents of the law or rules and regulations before their rights and interests are affected by the same. From the time the COA disallowed the expenses in audit up to the filing of herein petition the subject circular remained in legal limbo due to its non-publication. As was stated in Tañada v. Tuvera, "prior publication of laws before they become effective cannot be dispensed with, for the reason that it would deny the public knowledge of the laws that are supposed to govern it."¹¹