Job seekers scan for it, employees compare notes about it, and HR teams get asked about it constantly: does the company give HMO? Somewhere along the way, HMO coverage started to feel like a legal requirement, the same way SSS or PhilHealth is.

It isn't — not as a general statutory requirement for private employers. But that does not mean an employer can always treat HMO as a benefit that can be withdrawn whenever it chooses.

That distinction matters. Philippine law does not generally require a private employer to provide an HMO plan. But once an employer has promised, adopted, or consistently granted an HMO benefit under circumstances that make it legally enforceable, changing or withdrawing it can raise a different question altogether.

First, HMO Is Not the Same as PhilHealth

PhilHealth and HMO coverage are not interchangeable.

Employers have statutory obligations concerning social insurance, national health insurance, housing fund contributions, wages, leave, holidays, 13th-month pay, and occupational safety and health, subject to the applicable coverage rules and exemptions. HMO coverage, however, is not generally among the statutory benefits that private employers are required to provide to their employees.

That does not mean employers have no legal obligations relating to employee health. Depending on the workplace and the number and nature of employees, the Labor Code and occupational safety and health rules impose requirements concerning occupational health, emergency medical and dental services, and workplace safety. Those statutory obligations are different from providing employees with a private HMO plan.

So, as a starting point: PhilHealth is a statutory social health insurance program. An employer-sponsored HMO is generally an additional private health benefit.

Why Does HMO Feel Like a Legal Requirement?

Because, in many industries, it has become a practical expectation rather than a statutory requirement.

In competitive labor markets, particularly in BPO, technology, professional services, and other sectors where employers compete for specialized talent, HMO coverage can be an important part of the overall employment package. Some employers also extend coverage to dependents, provide different levels of coverage, or offer additional medical benefits.

That may make HMO feel like something every employer is required to provide. Legally, however, market practice and statutory obligation are two different things.

But Once You Give HMO, It Is Not Automatically "Just a Perk"

This is where the legal analysis becomes more interesting.

An HMO benefit may become enforceable not because the law generally requires HMO coverage, but because of the way the particular employer has granted the benefit.

An employee's entitlement may arise from an express provision in an employment contract, a collective bargaining agreement, an established company policy, or a company practice. The Supreme Court has recognized that benefits voluntarily granted by an employer may become protected from unilateral diminution when the circumstances establish a binding entitlement.

Company practice, however, is not created simply because an employer has given a benefit once — or even because it has been given for some period of time. The relevant circumstances include whether the benefit was consistently and deliberately granted over a sufficiently long period and under conditions showing that it was intended to be a regular employee benefit.

There is also no universal rule saying that an HMO benefit automatically becomes a company practice after three years, five years, or any other fixed period. Whether a company practice exists is a fact-specific determination.

What If the Company Wants to Reduce or Remove HMO?

This is where employers should slow down before simply sending an announcement.

Suppose the company has provided employees with HMO coverage for years and now wants to reduce the coverage, change the plan, remove dependent coverage, or discontinue the benefit entirely. The employer should first determine the legal basis of the benefit.

Was HMO coverage expressly promised in the employment contract or offer letter? Is it contained in a collective bargaining agreement? Does a company handbook or benefits policy expressly provide it? Does the policy reserve a genuine and clearly stated right to modify the benefit? Or has the employer consistently and deliberately provided the benefit over time in a manner that may establish a company practice?

These questions matter because the principle of non-diminution of benefits may apply when an employer attempts to unilaterally withdraw or reduce a benefit that employees have already acquired as an enforceable entitlement.

At the same time, the existence of an HMO plan does not automatically mean that every change to the plan is an unlawful diminution. Changes in the insurer, plan design, coverage limits, or administration must be examined against the actual terms of the employment arrangement, company policy, collective bargaining agreement, and established practice.

What Employers Should Do When Designing the Benefit

The best time to address the legal character of an HMO benefit is before it becomes a source of disagreement.

If an employer intends HMO coverage to form part of the employee's compensation package, the terms should be clearly documented and administered consistently. If the employer intends the benefit to remain subject to defined conditions or changes in the plan, those conditions should likewise be stated clearly in the applicable policy or employment documents.

But calling a benefit "discretionary" is not, by itself, an absolute shield. The actual terms of the arrangement and the employer's conduct over time may still matter. A written policy that says one thing but is consistently administered in another way can create questions that the employer may eventually have to answer.

The same is true when employees have received the benefit for years under circumstances suggesting that it was no longer merely an occasional or conditional grant.

What About PhilHealth YAKAP?

Recent developments in PhilHealth's YAKAP program should not be confused with a general legal requirement for employers to provide HMO coverage.

The Department of Labor and Employment has encouraged employers to support and facilitate workers' access to PhilHealth's enhanced primary-care program. That initiative concerns access to statutory health insurance and primary health care; it does not convert private HMO coverage into a general mandatory employer benefit.

The Bottom Line

There is no general rule saying that every private employer in the Philippines must provide HMO coverage.

But "not legally mandatory" does not necessarily mean "freely withdrawable."

An HMO benefit may become enforceable because the employer expressly promised it, incorporated it into a binding agreement or policy, or established it as a company practice under the circumstances recognized by law. Once an employee has acquired a legally enforceable entitlement, the employer cannot simply assume that the benefit can be reduced or withdrawn without legal consequences.

For employers, the practical lesson is simple: before introducing HMO, define it clearly. Before changing HMO, determine what legal entitlement may already exist.

HMO may begin as a voluntary benefit. The legal question is whether, over time and under the particular terms and circumstances, it has become something more.