"Right to work" has a completely different meaning than "Right to work in just and favourable conditions".
The latter refers to the fact that IF you are working then it should be in a safe environment not that you have the right to work at all.
Here it is in full form under Article 23 of the Universal Declaration of Human Rights:
1. Everyone has the right to work, to free choice of employment, to just and
favourable conditions of work and to protection against unemployment.