In a mini job you are permitted to earn a maximum of €520. Relatively few hours are therefore worked per month.

The mini job is also referred to as “marginal employment”. As an employee in a mini job, you are not required to pay any social security or income tax contributions. This means you receive all of the wage. You pay only a minimal amount towards pension.

This is unless you release yourself from the insurance obligation in the statutory pension insurance scheme. The employer, however, makes specific social insurance and tax contributions for the employment of the employee

For more information :

Does the minimum wage apply to me as a mini job worker?