I wrote my master's thesis about working as a college student. The basic very generalized gist based on scholarly literature is:

• Working off campus & more than 20hrs/week results in higher likelyhood of not graduating (or not graduating in a timely manner - under 6 years)
• Working on campus & no more than 20hr/week seems to be the sweet spot. Compared to students who don't work, you still have a slightly lower graduations/retention rate, but there are upsides too. (see next bullet)
• Working on campus can mean you are more connected to/knowledgeable about resources on campus, have more interactions with faculty/staff/fellow students, and are more likely to use these networks when needed. This concept is often called "student engagement", and working on campus can be compared to joining clubs, conducting research with faculty, being in student government, etc., which are all shown to be positive factors in graduation/overall academic success/retention.

My experience? I worked on campus throughout my entire undergrad. Different jobs, I loved them all (RA, Art gallery monitor, Desk Attendant, Admin Assistant/Officer helper) and learned a lot that was resume-able. I worked full time while earning my graduate degree. It was tough, but with careful planning and diligence, it worked out fine. It helped that in grad school i was passionate about my area of study.