No, zero-hour contracts are prohibited. However, there are some exceptional circumstances where such contracts are permissible by law. These are:
1. In cases where the nature of the activity of work to be performed requires the availability of replacement workers on short notice. Nevertheless, also in such conditionality, the zero-hour contract is not the whole-time employment of the said worker.
2. In cases where the worker is a full-time student.

If and where such cases arise and the conditions for such permissibility of the law for zero-hour contract are met, the responsibility and proof as such rest with the employer.