While I know in certain contexts a title should not be preceded by the definite article, e.g. "He was elected president," I find myself in doubt whether to use the definite article in such a sentence:
My name is John Doe. I am (the) chair of the Economics Department.
My intuition tells me both are correct. And as far as I have searched on Google, it seems both are used. Is that the case? Any difference in meaning? What about this sentence:
As (the) chair of the Economics Department, I wish to congratulate Jane Doe.