If you are a company actively seeking to employ or already employing foreigners, offering them assistance with language courses is of course a great gesture of goodwil.
However, it is not mandatory, as our government has many options to learn the local language already.
A first point of contact for your employers can always be the Agentschap voor Integratie en Inburgering
In addition we also have various online options for the individual learners here
Below you can find various organisations which may help you to organise language courses.