I would allow her to work if :
- her job is worthy enough to significantly increase our household income
- her job would give her enough time to take care of the family
- we can have someone trusted to watch the kids, manage the house while we are away.
- we can afford to cover the expenses for the previous item (baka kasi in the end, maging quits lang pag ni-netto mo yung additional income nya against the increase expenditures).

Otherwise, probably she can pursue a part-time/consultancy job which would keep her occupied and still have time to manage the household.