Your work experience is always relevant, even if you're changing fields. Aside from field-related skills, holding down a job shows at the very least that you're employable. Professionalism, accountability and work ethic are universal. While this isn't relevant to you, you also want to avoid having gaps in your work history because you're leaving out "irrelevant" jobs.
Some people split their work experience into two sections such as relevant and other. If you have a very long work history across different fields this can be a good option if done well and with care. If you have less than 10 years' experience a simple chronological history would probably be preferable though. Note that you'll always want your LinkedIn profile to have your full, chronological history.
Normally however, highlighting your relevant experience is done in the cover letter, which you tailor to the position you're applying for.
If you're a student or graduate and have work experience like this it's especially important to list that as it will give you a significant edge over other applicants without a proven track record in navigating the workplace.