Learn Turkish: Yönetim ile temas kurmakta fayda var. - It is advisable to establish contact with the management.

This structure literally means "there is benefit in doing something." You take the full infinitive verb kurmak (to establish), add the locative suffix -ta to mean "in establishing," and add fayda var (there is benefit). It is a standard way to give a strong, objective recommendation.

Is temas kurmak the only way to say "to establish contact" in this context?

It is a very common and slightly formal collocation, but there are excellent alternatives you can use interchangeably. You will often hear iletişime geçmek (to get in touch) or irtibat kurmak (to make contact), which would become iletişime geçmekte fayda var and irtibat kurmakta fayda var.

Since kurmakta doesn't show who is doing the action, how would I specify that it is advisable for us to establish contact?

The formula with the full infinitive -makta is completely impersonal. To specify the person, you must use the short verbal noun -ma instead, add the personal possessive ending, and then add the locative case. For "us," kurmakta becomes kurmamızda. So you would say Yönetim ile temas kurmamızda fayda var (literally, there is benefit in our establishing contact).