Who can view the offer details and offer letter?

The only individuals who have access to view the offer details and offer letter are:

1. Super Admins
2. Users with Sensitive Information Privileges for the job posting on the offer
3. The individual who fills in the offer details and generates the offer letter
4. Any signatories that you've designated on the offer letter
5. Any approvers of the offer

For numbers 3-5, these individuals are final after the offer is marked as sent. 

Click on on the linked text that says "# others" to confirm who can view an offer:

And check out this video for further information about generating offers in Lever.