Hi Megan. In the past, I've used an approach similar to what Elizabeth suggested for policy-based courses that required a learner attestation. SO it definitely can work.
That said, one way to make those kinds courses a bit more engaging is to break up the sub-sections of the policy with content that shows how they apply in the learner's real world. Think things like stories about ways that policy comes up your workplace and what to do, real examples of times people made mistakes with the policy and what the fallout was, scenario interactions, knowledge check questions about how the policy connects to tasks the learner does on the job, and more.
Doing this breaks up dry content. But it also helps people understand what exactly they're supposed to do with this information. And that's more likely to keep them from making policy mistakes than the policy text alone.