Computation of thirteenth month pay - whether payments for sick, vacation and maternity leaves, premiums for work on rest days and special holidays,…
Summary
This labor law case involved a dispute over thirteenth month pay computation between Davao Fruits Corporation and its employees' union ALU. The union sought recovery of 1982 thirteenth month pay differentials, claiming the company improperly excluded certain benefits (sick leave, vacation leave, maternity leave, premium pay, holiday pay) that had been included since 1975. While P.D. No. 851 and implementing rules technically exclude such items from basic salary computation, the Supreme Court affirmed lower tribunals' decisions favoring employees. The Court applied the non-diminution of benefits principle under Article 100 of the Labor Code, ruling that the company's continuous voluntary practice from 1975-1981 of including these benefits established a company practice that ripened into enforceable employee benefits that cannot be unilaterally eliminated, regardless of the technical legal requirements.
Focus of dispute
Computation of thirteenth month pay - whether payments for sick, vacation and maternity leaves, premiums for work on rest days and special holidays, and pay for regular holidays should be included in thirteenth month pay computation
Legal facts
On December 28, 1982, ALU filed complaint seeking recovery of thirteenth month pay differential for 1982 rank-and-file employees, claiming Davao Fruits Corporation excluded certain benefits (sick leave, vacation leave, maternity leave, premium pay for rest days/special holidays, regular holiday pay) from 1982 computation despite including them since 1975. Company claimed it erroneously included these items in prior years and discovered mistake in 1981 after San Miguel Corporation v. Inciong Supreme Court decision. Company had continuously included these items from 1975-1981 in thirteenth month pay computation.
Judgement and reasoning
{"Labor Arbiter": "Rendered decision on March 7, 1984 in favor of ALU, ordering respondent to pay the 1982 thirteenth month pay differential to all its rank-and-file workers/employees represented by complainant Union.", "National Labor Relations Commission (NLRC)": "Affirmed the Labor Arbiter's decision and dismissed petitioner's appeal for lack of merit.", "Supreme Court (SC)": "Dismissed the petition and affirmed NLRC decision. Court ruled that while P.D. No. 851 and its implementing rules exclude certain benefits from basic salary computation, the company's continuous practice from 1975-1981 of including these items established a voluntary company practice favorable to employees. This practice ripened into benefits that cannot be reduced, diminished, discontinued or eliminated under Section 10 of Rules Implementing P.D. No. 851 and Article 100 of Labor Code (non-diminution of benefits principle). Court rejected company's solutio indebiti argument as inapplicable to labor law."}