The formula coefficient × point value is not sufficient to produce a compliant payslip under CCN 66. Two reference point values coexist, the SMIC overshadows the first levels, and the Ségur is handled on a separate line. Mastering salary calculation according to collective agreement 66 requires checking each parameter before making any multiplication.
Two CCN 66 point values: choosing the right calculation base
The most common mistake is to apply a single figure without checking the employer’s legal framework. The conventional value from amendment 361 is €3.82, while the employer recommendation from Nexem raises this point to €3.93. The difference may seem minimal on an isolated coefficient, but it generates several dozen euros of difference on a gross monthly salary.
The establishment’s affiliation with Nexem (formerly Syneas / Unifed) determines which applies. An employee comparing their payslip to a grid found online without knowing their employer’s network risks contesting an amount that is, in fact, compliant. To clarify, a detailed guide on calculating salary according to collective agreement 66 allows for verification of each step.
Practical verification on the payslip
The payslip must mention the hierarchical coefficient and the retained point value. If only the gross salary appears, divide it (excluding bonuses and allowances) by the coefficient to find the point value used. A result close to €3.82 indicates the application of the conventional amendment, while a result close to €3.93 indicates the application of the Nexem recommendation.

Coefficient, classification, and seniority: the three variables that set the salary grid
The coefficient is not derived from the job title. Two specialized educators may fall under different coefficients depending on their diploma, recognized seniority, and the category of the job held. It is the coefficient stated in the contract that determines the grid line, not the job description.
Recognition of seniority and automatic progression
CCN 66 provides for progression by seniority that modifies the coefficient at regular intervals. Upon hiring, the recognition of seniority acquired with a previous employer under the same agreement (or a convention in the medico-social sector) conditions the starting coefficient. A poorly negotiated or poorly calculated recognition freezes the employee at a lower level for several years.
- Check the coefficient mentioned in the employment contract and compare it to the classification criteria of the corresponding annex (executives, non-executives, educational staff, etc.)
- Compare the recognized seniority to the supporting documents provided: work certificates, employer attestations, previous payslips
- Ensure that the automatic progression has been correctly applied on the anniversary dates specified by the grid
- In case of doubt, ask the employer for the details of the calculation with the reference of the annex and the retained level
Special duty allowance and the effect of the SMIC on minimum remuneration
The special duty allowance represents 9.21% of the basic gross salary for most employees under CCN 66. It is added to the product of coefficient × point value and appears on a separate line of the payslip. Its base is the indexed salary, not the total salary (including bonuses).
The problem arises at the lower levels. When the indexed salary plus the duty allowance remains below the SMIC, the employer must top up to the legal minimum. Several coefficients then lead to the same effective remuneration, which neutralizes the effect of the grid on the least qualified positions.
Example of neutralization by the SMIC
A service agent with the lowest coefficient sees their theoretical salary (coefficient × €3.93 + 9.21%) fall below the gross monthly SMIC. The employer then applies the SMIC. An agent classified one level above may find themselves at the same level of effective remuneration. The conventional grid only produces a real gap from a certain coefficient threshold.

Ségur bonus and CCN 66: a payslip line to be treated separately
The treatment supplement from the Ségur agreements is not part of the indexed salary. It appears on a separate line of the payslip and its amount does not depend on the coefficient. We regularly observe confusion between revalued indexed salary and Ségur supplement, even though both follow different rules.
Eligibility for Ségur depends on the establishment’s scope and the employee’s situation. Not all positions under CCN 66 are entitled to it. Structures within the disability sector, CHRS, and certain support services may fall under different schedules or amounts.
- Do not add the Ségur to the coefficient before multiplying by the point value: the Ségur is a flat rate, not an indexed element
- Check on the payslip that the Ségur line is indeed separate from the base salary and the special duty allowance
- If the line is missing while the establishment seems eligible, inquire with the HR department with the reference of the applicable agreement
Checking your CCN 66 salary: points of vigilance on the payslip
A compliant payslip under convention 66 includes at least the coefficient, the point value, the gross indexed salary, the special duty allowance, and, if applicable, the Ségur line. The absence of any of these elements makes verification impossible for the employee.
Consistency is verified in three operations: multiply the coefficient by the point value to obtain the indexed salary, apply 9.21% of duty, and then compare the total to the SMIC. Any anomaly at one of these three levels distorts the entire remuneration.
An incorrect classification cannot be corrected by a supplement or a bonus: the coefficient itself must be rectified, which retroactively modifies all related rights (seniority, progression, severance allowances). It is better to detect the error early than to compensate for it with informal adjustments.



