<human>: I am currently out of work on Short Term Disability (STD) medical leave from my job located in the state of Minnesota due to a diagnosis of Major Depression Disorder & GAD that has recently flared-up in my life. While I've been out I've come to the personal realization with the help of therapists that returning to my job under the same manager and co-workers would be detrimental to my mental health due to the toxicity of the workplace environment. I'm ready to move on from this company and intend to resign immediately after my short term disability period ends, but have a few legal questions I'd like to get more clarification on before making the final decision to do so.

I am seeking legal advice on the following questions:

**1)** If I inform HR and my manager that I will not be returning to work and that I am resigning from my position effective immediately will I have any legal repercussions for doing so? 

All the medical and therapy visits I've gone to have been subsidized by my current healthcare insurance provided by a third party through my employer. If I resign without returning to work will I be responsible for the medical expenses that my employment benefits provided during my short term disability at full cost? Also, will I have to pay back healthcare insurance premiums that my employer covered? The last thing I need to deal with is $20k + in medical bills if those costs are retroactively applied to me by my resignation without returning.

**2)** The company I am currently employed with also provided me with short term disability salary compensation through a third party insurance provider who has approved my medical claim while I've been out. I have used the funds I've received to help pay off the portion of the medical bills that I'm responsible for as well as to maintain my daily living expenses while I've been attending therapy programs. Can the insurance salary coverage that has been provided to me through the third party insurance provider be retroactively taken away and/or billed back to me if I do not return to work for a certain period of time?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Can my employer or healthcare insurance provider sue or bill me if I do not return to work for a certain period of time *(i.e. 30 days or more)*?