In Philippine public service, the question is not simply whether a government employee may earn extra income. The real question is whether the extra work is compatible with public office. Philippine law does not adopt a blanket rule that all side hustles are forbidden. At the same time, it does not treat government employment like ordinary private employment where moonlighting is generally a matter of employer policy. For public officers and employees, outside work is judged against constitutional restraints, civil service law, conflict-of-interest rules, anti-graft standards, agency regulations, and the overriding principle that public office is a public trust.

This legal article explains the governing framework, the distinction between allowed and prohibited activities, the special treatment of part-time teaching, and the practical compliance rules that matter in the Philippine setting.

I. The Basic Legal Framework

Several layers of law control side hustles and part-time teaching by government employees.

At the constitutional level, the 1987 Constitution imposes strict rules on multiple offices and employment in government, and it treats public office as a public trust. The Constitution is especially strict with appointive officials holding another office or employment in government, unless allowed by law or by the primary functions of the position.

At the statutory level, the main sources are:

the Administrative Code of 1987 and civil service law and rules;
Republic Act No. 6713, the Code of Conduct and Ethical Standards for Public Officials and Employees;
Republic Act No. 3019, the Anti-Graft and Corrupt Practices Act;
agency-specific laws, charters, and internal rules;
Civil Service Commission rules on employment, office conduct, and conflict of interest;
special rules for certain sectors, such as the judiciary, constitutional commissions, the military and police, state universities and colleges, and local government.

The result is a layered approach: an activity may look permissible in the abstract, but it may still become unlawful if it creates conflict of interest, uses public resources, interferes with official duties, or violates an agency’s own internal rules.

II. General Rule: Outside Work Is Not Automatically Illegal

A government employee is not automatically prohibited from having a side hustle or part-time work outside government. What the law generally prohibits is:

holding another office or employment in government without legal authority;
engaging in private work that conflicts with official duties;
using one’s government position to advance private interests;
receiving compensation in situations barred by law;
allowing the side activity to impair efficiency, impartiality, or integrity in public service.

So the proper legal answer is not “yes” or “no” in the abstract. It is:

Yes, possibly, if the outside activity is lawful, disclosed when required, outside official work hours, does not create conflict, does not use government resources, and does not violate agency rules.
No, if it amounts to prohibited dual employment, creates a conflict of interest, compromises official neutrality, or uses public office for private gain.

III. Distinguishing Dual Government Employment from Private Side Hustles

The first distinction is between:

another government office or government employment, and
private-sector outside work or business activity.

A. Holding Another Government Office or Employment

This is the more restricted category.

As a rule, an appointive government official or employee cannot hold another government office or employment unless:

the law expressly allows it;
the position’s primary functions legally include it;
the second role is ex officio;
the arrangement falls under a recognized exception, such as teaching assignments or positions specifically authorized by law.

This is why a government employee usually cannot simply accept another compensated government appointment on the side.

B. Private-Sector Side Hustles

Private work is treated differently. It may be allowed, but only if it does not violate ethical and operational restrictions. Examples include:

freelance writing;
consultancy;
online selling;
running a small business;
practicing a profession on the side;
paid speaking engagements;
tutorial services;
part-time teaching in a private institution.

These are not automatically banned, but they are heavily conditioned by conflict-of-interest and public duty rules.

IV. The Core Legal Test: Compatibility with Public Office

In Philippine law and civil service practice, the legality of a side hustle usually turns on five questions.

1. Does it conflict with official duties?

A side activity becomes problematic when the employee’s private interest could influence, or appear to influence, official action. Conflict may arise where the employee:

deals with persons or entities regulated by the office;
has official access to information valuable to the private business;
can influence permits, contracts, inspections, audits, licenses, or procurement involving clients or business partners;
handles matters that overlap with the employee’s private work.

Even if no actual corruption occurs, the appearance of impropriety is already a serious concern under public ethics law.

2. Is it performed during office hours or at the expense of government service?

Outside work generally must not be done during government working hours unless lawfully authorized. It is impermissible for the employee to:

teach, sell, or freelance while supposed to be performing official duties;
skip work, report late, or leave early to attend to the side hustle;
allow the side activity to reduce efficiency or productivity.

The government is paying for public service time, not private business time.

3. Does it use government resources?

A side hustle becomes unlawful or administratively punishable if it uses:

government office space;
government vehicles;
official letterhead;
government email or communication channels;
staff or subordinates;
office internet, equipment, printers, or supplies;
confidential or nonpublic government data.

Even seemingly minor use of public resources can create administrative liability.

4. Does it exploit official position or influence?

The employee cannot use public office to attract customers, students, clients, sponsors, buyers, or business partners. Red flags include:

advertising oneself by official title to induce private business;
pressuring subordinates or regulated parties to patronize the side business;
soliciting clients from persons with pending business before the agency;
accepting private work because of one’s regulatory or decision-making power.

This can trigger both administrative and anti-graft consequences.

5. Is it expressly prohibited by law or agency rule?

Even a side activity that seems harmless may still be prohibited by:

a special law governing the position;
agency conflict-of-interest rules;
internal HR or code-of-conduct policies;
profession-specific incompatibility rules.

Certain offices are much more restrictive than ordinary civil service positions.

V. Republic Act No. 6713: Why It Matters So Much

RA 6713 is central to the topic because it imposes ethical duties and lists prohibited acts and transactions for public officials and employees.

Under this law, public officials and employees must uphold professionalism, commitment to public interest, responsiveness, nationalism and patriotism, justness and sincerity, political neutrality, and simple living. These are not abstract ideals only; they shape how outside work is judged.

The most important consequences for side hustles are these:

A. Financial and Material Interest

A public employee must not have a financial or material interest in transactions requiring approval by the employee’s office.

Thus, if an employee’s side business supplies goods or services to the same office, or to parties whose matters the employee handles, the arrangement may be prohibited or highly suspect.

B. Outside Employment and Conflict of Interest

The law is especially wary of outside employment that clashes with official functions. If the employee’s private work:

is with a firm dealing with the agency,
benefits from insider information,
involves representation before the government,
or puts the employee in a position of divided loyalty,

it may violate the law even if done after office hours.

C. Solicitation and Use of Position

Public office may not be used for private advantage. A government employee cannot turn official status into a commercial asset.

D. Disclosure Obligations

Statement-of-assets and disclosure rules may be implicated where the side hustle involves ownership, business interests, or income that must be declared. Failure to disclose can create a separate compliance issue.

VI. Anti-Graft Risks Under Republic Act No. 3019

A side hustle may move from being merely “questionable” to being potentially unlawful under anti-graft law if it involves corrupt or self-dealing conduct.

The risk is highest where the employee:

has business with the government;
intervenes in contracts, procurement, permits, licenses, or approvals in which he or she has an interest;
receives benefits because of official action;
causes unwarranted benefit to a private party connected to the employee.

Not every side hustle is a graft case. But once private earnings become tied to official action, the exposure becomes serious.

VII. Side Hustles Commonly Considered Lower Risk

These are not automatically lawful, but they are generally easier to justify if properly handled:

creative work such as writing, art, music, or content creation;
online selling of ordinary goods not linked to one’s office functions;
tutorial services unrelated to regulated parties;
farming or small passive family businesses;
freelance work that has no overlap with the employee’s agency;
part-time teaching, subject to legal conditions.

Even here, the employee must still avoid office-hour conflicts, misuse of resources, and conflicts of interest.

VIII. Side Hustles Commonly Considered High Risk

These deserve special caution because they often collide with public ethics rules:

private consultancy in a field the employee regulates in government;
legal, accounting, engineering, or compliance services for persons dealing with the agency;
selling to one’s own office or to agencies over which the employee has influence;
recruitment, liaison, or processing services involving government permits or approvals;
acting as fixer, broker, or “facilitator” before government offices;
using insider information for trading, land deals, or business advantage;
running a business through subordinates or office contacts.

These activities often create actual or apparent conflicts of interest.

IX. Part-time Teaching: Why It Is Treated More Favorably

Part-time teaching occupies a special place in Philippine law and public policy. Teaching is often recognized as a socially useful, professionally compatible activity, and the legal system has historically been more open to allowing government employees to teach part-time than to engage in ordinary private commercial ventures.

This more favorable treatment, however, does not mean unrestricted freedom. It means that part-time teaching may be allowed if the governing rules are observed.

X. Teaching in Another Government Institution

When a government employee teaches in a state university, college, or other government educational institution, the issue is not merely outside work; it may become dual government employment. That is where constitutional and statutory limitations become relevant.

As a general rule, a second government employment requires legal authority. In practice, part-time teaching assignments in government institutions are often treated as a recognized exception or are allowed under rules that specifically authorize them, especially where:

the teaching load is limited;
the assignment is outside regular office hours;
the employee obtains prior written authority;
the arrangement does not prejudice the employee’s primary government duties;
the compensation structure follows existing rules.

Without proper authority, simultaneous government employment can be invalid even if the teaching seems benign.

XI. Teaching in a Private School or Private Educational Institution

Teaching in a private college, university, review center, or training institution is usually analyzed as outside private employment, not dual government employment. This makes it easier to justify legally, but only if all safeguards are met.

A government employee may generally teach part-time in a private institution when:

the teaching is outside official working hours;
it does not interfere with government duties;
it does not involve use of government resources;
the school or students do not create a conflict with the employee’s office;
agency permission is obtained when required by internal rules.

This is one of the more commonly accepted forms of outside work for government employees.

XII. Prior Permission: Is Approval Required?

In practice, yes, prior permission is often crucial.

Even where no statute expressly says that every side hustle requires approval, government employees are usually bound by civil service and agency rules requiring disclosure, clearance, or written permission before engaging in outside employment. Many offices require approval from the head of agency, HR, or an ethics committee.

For part-time teaching especially, prior written authority is the safest course because it documents that:

the employee informed the agency;
the agency found no conflict;
the schedule does not overlap with office hours;
the employee’s primary duties remain paramount.

From a compliance standpoint, “I thought it was allowed” is a weak defense. Written approval is much better than verbal tolerance.

XIII. Limits Commonly Applied to Part-time Teaching

Even when teaching is allowed, the permission is usually subject to conditions such as:

limited teaching units or hours;
classes only after office hours, on weekends, or during approved periods;
no teaching that causes tardiness, absences, or incomplete government work;
no use of official title to market the teaching role improperly;
no conflict with the subjects, entities, or persons the employee deals with officially;
revocation of permission if public service suffers.

For some employees, the office may also require that teaching be occasional or part-time only, not a second full-scale career.

XIV. Compensation Issues in Part-time Teaching

Compensation matters in two ways.

A. The source of pay

If the employee teaches in a private institution, the payment is private compensation for private work, subject to the general restrictions already discussed.

If the employee teaches in a government institution, the payment may implicate constitutional and budgetary rules on double compensation, additional compensation, honoraria, or multiple positions in government.

B. The nature of pay

The legal treatment may differ depending on whether the pay is characterized as:

salary;
honorarium;
lecturer’s fee;
professional fee;
overload or teaching load compensation.

Labels are not controlling. What matters is the true nature of the arrangement and whether the law authorizes it.

XV. Double Compensation and Extra Compensation Concerns

The Constitution and related public finance rules are cautious about public officials receiving multiple public compensations. The concern is strongest where a person is drawing pay from more than one public position or is receiving extra compensation not authorized by law.

Thus, a government employee who teaches part-time in another government institution must be careful not only about dual employment but also about the legality of receiving additional public compensation.

The safe principle is this: where both the primary employment and the teaching engagement are government-funded, legal authority must be clear.

XVI. Agency-Specific Rules Can Be Stricter Than the General Rule

One of the biggest mistakes in this area is assuming that the general civil service rule is the whole story. It is not.

A government employee may be subject to stricter rules under:

the agency charter;
internal code of conduct;
employment contract or appointment conditions;
professional ethics rules;
special law applicable to the office.

Examples of positions that often face tighter restrictions include:

judges and court personnel;
prosecutors;
members of constitutional commissions;
officers in procurement, audit, taxation, customs, regulation, or enforcement;
military and police personnel;
employees handling confidential, proprietary, or highly sensitive information.

For such positions, even a seemingly modest side hustle may be forbidden or heavily restricted.

XVII. Local Government Employees

Employees of local government units are still covered by national constitutional, anti-graft, and ethical standards, but they may also face local ordinances, CSC rules, and DILG-related compliance concerns.

For LGU employees, outside work becomes especially sensitive when it involves:

contractors or permit applicants in the locality;
businesses requiring local licenses;
real estate, land-use, zoning, or tax-related dealings;
educational work tied to local influence or patronage.

Part-time teaching may still be permissible, but the same conflict and schedule restrictions apply.

XVIII. State University and College Personnel

Personnel in state universities and colleges often already have teaching, research, extension, and consulting functions built into their appointments. For them, the issue is less about whether teaching is allowed and more about whether the additional teaching or outside professional work is within authorized load, compensation, and conflict rules.

A faculty member in a state university may have more latitude to teach, lecture, write, or consult, but still remains bound by:

conflict-of-interest restrictions;
approval requirements for outside practice or consultancy;
limits on use of university resources;
intellectual property and disclosure rules;
government compensation rules.

XIX. Public School Teachers

Public school teachers are government employees, but they are also governed by sector-specific rules. Teaching itself is of course their primary role, so the usual side hustle issue is not “may they teach?” but whether they may engage in extra teaching, private tutorials, review classes, online content teaching, or business activities.

The basic standards still apply:

no conflict with official duties;
no use of school time and resources for private gain;
no coercive solicitation of students;
no paid side teaching that undermines official classroom responsibilities;
no use of public school pupils as a captive market.

This is especially important when the private tutorial or review business involves one’s own students or school community.

XX. Can a Government Employee Teach Review Classes, Tutorials, or Online Courses?

Usually, this may be allowed in principle, but the details matter.

The activity becomes risky when:

the employee teaches current clients, examinees, regulated parties, or persons with pending matters before the agency;
the employee uses official materials or confidential information;
the employee pressures co-workers, students, or subordinates to enroll;
the employee records or runs classes during office hours;
the employee uses government platforms, facilities, or staff.

An online format does not avoid the law. A “digital side hustle” is still outside employment and is judged by the same standards.

XXI. Can a Government Employee Practice a Profession on the Side?

This depends on the profession and the employee’s office.

Lawyers in government, engineers, accountants, architects, doctors, and other licensed professionals may face special restrictions, particularly where private practice overlaps with official functions. Some appointments prohibit private practice outright. Others allow it only with written authority.

Part-time teaching is usually easier to defend than private professional practice because teaching is less likely to involve direct representation of private interests before the government. But even teaching can become problematic if it creates conflict or uses public resources.

XXII. The Role of Disclosure and Transparency

A side hustle is far safer legally when it is disclosed.

Disclosure serves several purposes:

it allows the agency to assess conflict of interest;
it protects the employee from later accusations of concealment;
it helps define schedule boundaries and conditions;
it may be necessary for asset and business-interest declarations.

Where ownership, business interest, or outside compensation is substantial, the employee should assume that disclosure is important.

XXIII. Tax and Business Registration Do Not Cure Illegality

Many employees think that once the side hustle is registered with the BIR, DTI, or SEC, the problem disappears. That is incorrect.

Tax compliance and business registration are necessary for the business side of the activity, but they do not answer the public law question. A fully registered business may still be prohibited for a government employee if it creates conflict of interest or violates civil service rules.

Conversely, a side activity may be ethically permissible but still tax-noncompliant if not properly declared. The employee must satisfy both public law and tax/business law requirements.

XXIV. Use of Official Title in Teaching and Side Work

A subtle but important rule concerns how a government employee presents himself or herself to the public.

Using one’s official title purely for truthful identification may not always be forbidden. But using it to solicit business, gain commercial trust, or imply official endorsement is dangerous.

Examples of risky conduct include:

advertising consultancy services as “approved” because one works for the government;
using official stationery or seals for private teaching engagements;
implying that students or clients will receive special treatment due to one’s office;
leveraging official rank to attract customers.

The line between biography and improper exploitation of office can be thin.

XXV. Nepotism, Subordinates, and Internal Coercion

A side hustle or teaching engagement may also create liability when it involves one’s own subordinates or office structure.

Problematic situations include:

requiring or pressuring subordinates to buy products or enroll in classes;
using subordinates as unpaid assistants in the side business;
giving favorable treatment to employees who patronize the side hustle;
entering business arrangements with people one supervises.

This can amount to abuse of authority or conduct prejudicial to the service.

XXVI. Social Media, Content Creation, and Monetized Online Platforms

Modern side hustles often involve YouTube channels, paid subscriptions, coaching platforms, affiliate marketing, and social media endorsement work. These are still governed by the same legal principles.

They are especially risky when the employee:

comments on matters pending before the agency in a monetized way;
discloses nonpublic information;
promotes products to persons the employee regulates;
records content during office hours or in government premises;
uses official identity to create commercial influence.

A monetized online teaching channel may be acceptable in principle, but it must still pass the compatibility test.

XXVII. What Happens If the Rules Are Violated?

Violations can lead to multiple forms of liability.

A. Administrative liability

Depending on the conduct, the employee may face charges such as:

conduct prejudicial to the best interest of the service;
dishonesty;
grave misconduct;
neglect of duty;
insubordination;
violation of reasonable office rules;
conflict-of-interest violations.

Penalties may range from reprimand to suspension to dismissal, depending on the offense and surrounding facts.

B. Civil or financial consequences

The employee may be required to return unauthorized compensation or may face disallowance issues in audit-related contexts.

C. Criminal liability

If the conduct involves graft, bribery, unlawful solicitation, or corrupt self-dealing, criminal exposure may arise under anti-graft and related penal laws.

XXVIII. Practical Compliance Rules for Government Employees

A legally cautious government employee should treat side hustles and part-time teaching as permissible only when the following conditions are satisfied:

the activity is not prohibited by a special law, agency charter, or internal rule;
the employee has no role in regulating, approving, auditing, or transacting with the persons or entities involved;
the activity is outside office hours, unless specifically authorized;
no government resources are used;
the employee does not use the office, title, or influence for commercial gain;
the arrangement is disclosed to the agency when required or prudent;
prior written approval is obtained, especially for teaching or recurring outside work;
the side activity does not reduce efficiency, availability, or neutrality in public service;
all income and business interests are properly declared where legally required;
compensation from another government source is accepted only when clearly authorized by law or rule.

XXIX. A Working Legal Summary

The Philippine rule is best stated this way:

A government employee may engage in a side hustle or part-time teaching only when the outside activity remains subordinate to public service and does not produce legal incompatibility.

Part-time teaching is one of the most defensible forms of outside work for government employees, but it is not exempt from legal control. It is generally allowed only when it is compatible with official duties, outside regular work hours, properly authorized when necessary, free from conflict of interest, and not funded or structured in a way that violates rules on dual government employment or double compensation.

Ordinary side hustles, meanwhile, are judged less by the fact of earning extra income and more by the risk they pose to impartiality, integrity, and faithful performance of public duties. The moment the private activity overlaps with official power, regulated entities, government resources, or public influence, the arrangement may become unlawful.

XXX. Bottom-Line Legal Conclusions

In Philippine law:

Side hustles are not per se illegal for government employees.
Dual government employment is heavily restricted and usually requires clear legal authority.
Part-time teaching is often allowed, especially when outside office hours and properly authorized.
Private outside work is allowed only conditionally, not as an absolute right.
Conflict of interest is the decisive issue in many cases.
Agency approval and disclosure are often critical, even when the activity appears harmless.
Using official position for private gain is prohibited.
Teaching in another government institution raises special compensation and dual-employment issues.
Registration with the BIR, DTI, or SEC does not by itself make the activity lawful for a government employee.
Special categories of public officers may be subject to stricter rules than the general civil service standard.

The safest legal mindset is simple: a government employee may earn outside income only to the extent that the activity does not dilute the employee’s first and overriding obligation to serve the public with integrity, efficiency, and undivided loyalty.