Under the ballot measure, Proposition F, welfare recipients who use illegal drugs would be mandated to undergo treatment or be denied cash assistance. If they were found to be using drugs, an addiction specialist and the recipient would agree on treatment options that include residential care, a 12-step program, individual counseling and replacement medication.
It will impact those who receive cash assistance, not "welfare recipients" in general. And if they choose to receive treatment then they will continue to receive benefits.
Honestly, same as with Oregon's recent 're-criminalization' these measures in blue states are
far more measured than anything you'd see in a 'war on drugs' red state and I'm not wholly opposed to these middle-ground measures.