Dear Jenni_0211,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
As per your description, it seems that you are trying to open a Word file from program in local word desktop app.
If the understanding above is right, generally, files can be opened in Word desktop app with below steps:
- Click the File tab.
- Click Open.
- Click Browse,
- To see only the files saved in the OpenDocument format, click the list of file types next to the File name box, and then click OpenDocument Text.
- Click the file you want to open, and then click Open.
For your reference: Use Word to open or save a document in the OpenDocument Text (.odt) format - Microsoft Support
Given this, please check if the files inside the main program can be opened via Browse in Word desktop app. Please also check if you can open the file in Recent files as you mentioned that you "open Word itself on 2 separate occasions on accident".

Hope the above can help. If not, considering that our category mainly focuses on general and built-in queries in Word, and you have mentioned that you are using "a program at work" and "Word document opening inside main program", we'd sincerely recommend you consult with other users in your organization or IT department who may have related experience.
If my understanding of the scenario is not consistent with yours, please feel free to point it out.
Thank you for your cooperation and understanding! Have a good day!
Sincerely,
Rhoda | Microsoft Community Moderator