Si estas teniendo problemas con la fabrica de papel, la solucion que me funciona a mi es la de entrar a
C:\steam\steamapps\common\Victoria 3\game\common\production_methods\01_industry
y buscas las lineas pm_pulp_pressing - pm_sulfite_pulping - pm_bleached_paper .
veras la cantidad maxima de trabajadores fijada por ejemplo:

level_scaled = {
building_employment_shopkeepers_add = 500
building_employment_laborers_add = 4500
}

copias cada una de ellas de cada metodo de produccion y vas a
C:\steam\steamapps\workshop\content\529340\2962482328\common\production_methods\
iex_CONSUMER_INDUSTRY
y buscas las lineas pm_pulp_pressing - pm_sulfite_pulping - pm_ink_paper - pm_bleached_paper y las pegas en cada una de esas ya que veras que faltan, y por eso no genera empleo las industrias de papel.

para el metodo de produnccion pm_ink_paper tendras que inventarte una vos o copiarte de la de
pm_bleached_paper.

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If you are having problems with the paper mill, the solution that works for me is to go to
C:\steam\steamapps\common\Victoria 3\game\common\production_methods\01_industry
and you look for the lines pm_pulp_pressing - pm_sulfite_pulping - pm_bleached_paper
you will see the maximum number of workers set for example:

level_scaled = {
building_employment_shopkeepers_add = 500
building_employment_laborers_add = 4500
}

You copy each of them from each production method and you are going to
C:\steam\steamapps\workshop\content\529340\2962482328\common\production_methods\
iex_CONSUMER_INDUSTRY
and you look for the lines pm_pulp_pressing - pm_sulfite_pulping - pm_ink_paper - pm_bleached_paper and you paste each one that you copied into each of those since you will see that they are missing, and that is why the paper industries do not generate employment.
For the pm_ink_paper production method you will have to invent or copy from the one in
pm_bleached_paper.