Learn Hardcore Afrikaans: Ons gaan die salarisstrokie na, ongeag of hulle haar onderbetaal. - We check the payslip regardless of whether they underpay her.

Full verb: nagaan = to check, examine, review
In a main clause, the first part stays in the normal verb position, and the particle moves to the end:
- Ons gaan die salarisstrokie na.

So this is not the preposition na meaning after or to. It is the second part of the verb nagaan.

Does Ons gaan mean we are going to here?

No. In this sentence, gaan ... na belongs together as nagaan.

So:

Ons gaan die salarisstrokie na = We check / review the payslip
not We are going to the payslip

This can be confusing because gaan often does mean go or helps form a future meaning. But the na at the end shows that this is the separable verb nagaan.

What does salarisstrokie mean, and why is it one long word?