Is work on Sunday allowed?

I want to take a job to help pay for college ahead of time (meaning it is not totally necessary) and virtually every possible job around me requires its new employees to work Sundays. I have heard varying seemingly contradictory opinions on what the Church truly teaches about Sunday obligations with concerning to work. What does the Church really teach on this. Is there really any black and white answer to whether can I work in this situation on Sundays. Thanks!

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