Understanding Society User Support

Hi,
I was wondering whether the derived labour income variable bW_fimnlabgrs_dv in the BHPS data (not UKHLS) measures total gross or net labour income.
Unfortunately, the variable label does not give information on this. I couldn't even find the variable in the BHPS documentation.

Given the case that bW_fimnlabgrs_dv reports gross labour income, could you please tell me if there is a derived net labour income variable in the data?
In the datasets, I couldn’t find a bW_fimnl variable as described in the manuals.
Thanks!