Being a recognized sponsor comes with obligations including, but not limited to, conducting a careful recruitment & selection process and timely notification of changes. The IND expects all current recognized sponsors to comply with these regulations. If you do not comply, you risk losing the sponsorship and the permits of your highly skilled migrants.
In broad terms, these obligations consist of:
Video: Which duties does a recognized sponsor has to fulfil’ with further explanation.
A Video of the Immigration and Naturalisation Service (IND)