One cannot get FIS and a jobseekers payment. If both yourself and your husband are receiving jobseekers payment then you cannot apply for FIS. However, if your husband is not claiming jobseekers, simply working a 3 day week (over 19 hours as mentioned above) then he could make a FIS application (again assumes household income is less that the limit mentioned above, for 2 children - €590). In some cases (generally with 3+ children because the FIS limit increases, it can be more beneficial not to claim Jobseekers and claim FIS instead. You should check that out...