Payroll costs

Optional Bonuses and Allowances

8 September 2026

1. What Is a Discretionary Bonus or Allowance?

A bonus or allowance is optional when no law requires the employer to pay it. It is not mandated by law or by a collective bargaining agreement; rather, it results from a decision made by the company.

This is what distinguishes it from mandatory components:

Mandatory Optional
Source The law, a collective bargaining agreement, or a company-wide agreement A decision by the employer
Can the employer choose not to pay it? No Yes, at the time it is established
Can the employer freely eliminate it later? Not applicable Not necessarily; see Section 4

A misunderstanding to clear up from the outset. “Optional” refers to the decision to create the benefit, not the freedom to withdraw it. A bonus that the company was under no obligation to introduce may, once established, become legally enforceable. This is the most costly aspect of this entire issue, and the subject of Section 4.

2. Why a company creates it

If there is no legal obligation to do so, why would an employer voluntarily take on this burden? Because these benefits address needs that the base salary does not cover.

The Need What the optional benefit provides
Attract Stand out from a competitor offering the same base salary
Retain Provide a reason to stay beyond the base salary
Motivate Link part of the compensation to performance
Compensate for a real constraint Offset a constraint specific to the position or location
Adjust without changing the pay scale Improve actual compensation without changing the pay structure

The last point deserves attention. A bonus can be created, adjusted, and, under certain conditions, eliminated. A base salary increase, on the other hand, is permanent. It is this desired flexibility that explains the use of bonuses, and it is also what leads to creating too many of them, to the point where the system as a whole becomes unmanageable.

3. The Most Common Types

Two categories, based on the logic behind them.

3.1 Those that reward (bonuses)

Bonus What it recognizes
Productivity or performance bonus An individual or collective result
Balance Sheet or Earnings Bonus The company’s performance for the fiscal year
Attendance or punctuality bonus Consistent attendance
Special bonus A one-time effort beyond the usual scope

3.2 Compensation (allowances)

Compensation The hardship it offsets
Transportation allowance The commute between home and work
Housing allowance Housing costs, particularly in the case of a work assignment
Meal allowance Meals required by schedule or work location
Dirty-work allowance Working conditions that result in soiling
Cash-handling allowance Financial liability for handling cash
On-call or standby allowance Mandatory On-Call Duty Outside of Working Hours

An essential check must be performed before classifying a benefit as “optional.” Many of these benefits are mandated by certain industry-specific collective bargaining agreements. The same benefit may therefore be optional in one company and mandatory in another.

The rule of thumb: never classify a bonus as optional without first verifying the collective bargaining agreement applicable to the company.

4. The main pitfall: the optional bonus that becomes mandatory

This is the central challenge of the issue, and the one that generates the most litigation.

4.1 How a Benefit Becomes Mandatory

A bonus paid on a recurring basis eventually becomes established practice. It was never written down anywhere, but it has become customary, and as such, it is binding on the employer.

Three characteristics are typically used to recognize a customary practice:

Characteristic What it means
1 Consistency The amount or the calculation formula does not vary at the employer’s discretion
2 Regularity Payments are made on predictable dates
3 Universality It benefits everyone, or a homogeneous category of employees

The transition requires no decision. No one signs anything. The benefit becomes binding solely through the effect of its repetition, because employees have come to count on it as part of their income and their spending habits.

4.2 A practice cannot be eliminated by unilateral decision (company practice)

Ending it requires a procedure. This typically includes:

  1. Notifying employee representatives;
  2. Notifying each affected employee individually;
  3. A sufficient notice period to allow for potential negotiations.

The consequence is severe: if the full procedure is not followed, the practice continues to be in effect.

There is no such thing as a belated or incomplete termination: it is considered never to have taken place at all. The employer remains obligated to pay the bonus, exactly as before the attempt.

5. Establishing an Optional Bonus Without Tying Your Own Hands

The risk described above is not a reason to abandon optional bonuses. It is a reason to establish them in writing and in a systematic manner. Consult APPM.

The Five Points to Address

The point Why
1 The purpose State what the bonus rewards or compensates for. A benefit without a clearly defined purpose is unmanageable and unverifiable
2 Beneficiaries Identify a homogeneous category (position, location, level of responsibility) based on objective criteria—never specific individuals by name
3 Calculation method Establish an explicit rule: lump sum, percentage, or pay scale. A written calculation also protects the employer from any suspicion of arbitrariness
4 Eligibility requirements Specify what triggers the payment and what suspends it
5 Duration and revision procedures Specify from the outset whether the benefit is for a fixed term, and the procedure by which it may be revised or terminated

The fifth point is the one that’s often overlooked, and the only one that truly provides protection. A bonus established for a fixed term—or accompanied by a revision clause announced from the outset—does not create the same expectation as a bonus paid with no end in sight. Specifying the termination conditions at the time of implementation takes just one sentence; improvising them three years later could cost you the benefit.

Two Common Mistakes

The mistake What it leads to
Paying without putting anything in writing, “to stay flexible” The exact opposite of the intended goal: the practice becomes ingrained, and flexibility disappears
Deciding on a case-by-case basis, depending on the situation at the time A sense of arbitrariness among teams, and difficulty justifying deviations

6. Optional does not mean exempt

This is the second misconception to dispel.

The optional nature of a bonus describes its origin—the fact that no law requires it. It says nothing about how it is treated for tax purposes.

A compensation component is included in the contribution base as soon as it qualifies as wages—assessed in particular based on its fixed nature, regularity, and universality—the very same characteristics that also give rise to the practice.

The consequence is significant—and rarely anticipated: a well-established optional bonus meets exactly the criteria that make it both mandatory and subject to social security contributions. These are the same criteria that produce both effects.

On the other hand, amounts that actually constitute reimbursement of expenses incurred follow a different logic. The word “actually” is key: it is the actual nature of the payment that matters, not its description on the pay stub.

The Essentials in 7 Points

  1. A bonus or allowance is optional when no law requires it: it stems from a company decision.
  2. “Discretionary” refers to the creation of the benefit, not the freedom to withdraw it.
  3. Check the applicable collective bargaining agreement before classifying a benefit as optional: many are mandatory depending on the industry.
  4. A consistent, regular, and widespread benefit becomes an established practice without any formal decision being made.
  5. Eliminating a customary practice requires a full procedure; otherwise, the practice remains in full force.
  6. Establish a bonus in writing, specifying its purpose, beneficiaries, calculation, and conditions and procedures for revision.
  7. “Optional” does not mean “exempt”: the criteria that make a bonus mandatory are the very same criteria that make it subject to contributions.

Are these decisions not your area of expertise?

Establishing, modifying, or terminating a bonus has implications for the company that go far beyond the amount paid. APPM can advise you. Please contact us.