Policy careers with PhD in Social Welfare/Social Work?

[Applicant4788]

Hi, all

I have been exploring the idea of applying to PhD Social Welfare/Social Work programs this fall, for matriculation in Fall of 2020. I have a background in psychology (research-based Master's degree), and I currently work as a lab manager in a clinical psychology lab at a well-known university with high research activity. I am looking at social welfare programs due to an interest in doing community-based and policy-oriented mental health research. 

I have been looking at career outcomes for PhDs in Social Welfare/Social Work online and can usually only find a brief (and vague) mention of policy-related careers that one can pursue with this type of education. Would any of you be willing to provide me with additional information regarding the types of policy careers one can pursue with a Social Welfare PhD?