I am turning in my LWOP for two months starting in February. I am hoping to change jobs in the public sector. I brought up overworked and too much caseload. My manager said it was 'policy' and cant do much. I even requested cases to be transferred out already as of yesterday. In addition, I found out more unfortunate information about my GI condition due to stress.
Work can always replace you and its not worth sacrificing your happiness for work. Its not worth it to be stressed out including unmanageable workload.