Recuperation Day for Holiday that falls on a weekend or that you have worked

End of the year normally - it should just get added to your "standard" holiday entitlement.

If a public holiday coincides with a Sunday or an ordinary day of inactivity in the undertaking (usually Saturday), it should before or after that date be replaced by another day of rest (substitute day) which must be fixed on an ordinary day of activity. In this case, the public holiday loses its character of public holiday and the substitute day takes over this status. The substitute day becomes the actual public holiday.

The substitute day is determined:

by the joint committee (to find out to which joint committee your undertaking belongs, please contact …)
failing this, through agreement with the trade union representative or
failing this, through a collective agreement between the employer and all the workers
failing this, by common consent between the employer and each worker.

In the absence of an agreement at these various levels, the public holiday will be replaced by the first ordinary day of activity in the undertaking following that public holiday