Where does “caseworking” come from?

caseworking (English) comes from English working, from Middle English werking, from Old English wyrċing, from Old English -ing, from Old English -tūn, from Old English tūn, from Proto-West Germanic tūn, from Proto-Germanic tūną — smoke; mist, haze.

Ancestry of “caseworking”, step by step

caseworking traces back through two separate lines of ancestry.

via English working

StepLanguageWordMeaning
1EnglishworkingOperation; action; Method of operation; The...
2Middle Englishwerking
3Old Englishwyrċingworking, doing
4Old English-ingForming nouns from verbs, indicating action,...
5Old English-tūnhomestead, village, town
6Old Englishtūnenclosure, yard; place; dwelling
7Proto-West Germanictūnfence
8Proto-Germanictūnąfence; enclosure
9Gaulishdunumfort; hill, hillfort
10Proto-Celticdūnomstronghold, rampart
11Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via English Case

StepLanguageWordMeaning
1EnglishCaseabstract feature of a noun phrase that determines...
2GermanKäsecheese; nonsense
3Middle High Germankæsecheese
4Old High Germankāsicheese
5Proto-West Germanickāsīcheese
6Proto-Germanickāsijazcheese
7Latincāseuscheese
8Proto-Indo-Europeankwat-to ferment, become sour; to boil
Every word from Proto-Indo-European dʰewh₂-Every word from Proto-Celtic dūnomEvery word from Gaulish dunum