One of the situations where income inequality plays a role is in the search for work because of the professional network, what could governments do to improve the professional network of the poor?

What I mean by that:

Even when two persons (one poor, another rich) are "exactly" the same in qualifications and skills, the rich one will have more opportunities because his family has more professional network with employers, while the family of the poor is likelier to have fewer known employers.

This plays a role in job opportunities.

Here in Brazil, there is a current joke that to have a job it depends of your Q.I. [I.Q], that is, Quem Indica [who indicates, that is, your connections]. And, of course, richer people tend to have more "Q.I".

So, what policy could a government implement in order to specifically increase the professional network of the poor?