If you are saying "I'm working my dear" as something that is going on right now, you could say "Estoy trabajando, cariña."
If you are talking about the future, "I'll be working, my dear", then it would be "Voy a trabajar, cariña" or "Trabajaré, cariña"
Just remember that the Spanish "progressive" tense only applies to present action.
Dear (noun) = cariño Dear (adjective) = querido To = a
Mi querido.
Querida berta
querido amigo
Querido (for a male). Querida (for a female).
mi cariño/a mi querido/a
Bastante bien, cariño.
"Estimada Srta. Estrada"
Querida Señora Rey.
trabajo
"Querido diario" is how you would say "dear diary" in Spanish.
Son trabajadores