If you are unsure what kinds of information people in your field of study know, then it is better to err on the side of caution and cite the source. Any time you use someone else's idea, that source needs to be cited. You may either include a direct quotation or you may paraphrase the idea and cite it. Due to the scarce supply of jobs in Appalachia, those people who can hire people have tremendous power. Neither the sentence structure nor the words are derived from the original quotation.
Jobs are a kind of currency.
Even though few of the words in the paraphrase are found in the original quotation, the paraphrase fails to use a different sentence structure from the original source . It simply substitutes synonyms. When writing a paraphrase, don't look at the original quotation as you are writing. Instead, use your own words and sentence structure to convey the idea. Then compare it with the original to ensure that it does not accidentally use the sentence structure or many of the words from the original source.