Can HR Deny a job offer?

Hi everyone,
I used to work for this hospital back in 2024-2025 and in August of 2025 i had a write up because i went over my break too many times. i applied to the same hospital a few weeks ago and i had an interview, and i received an email asking for my references. i called HR a few days later and they told me the hiring manager is moving forward with my application and that HR is pending the approval process. Can HR deny the job approval because of this write up that happened in August of 2025. At the time of the write up I had messaged my then supervisor and asked her if it will effect me getting a new position and all she said was “hello they do look for disciplinary action within 12 months”
Can HR Deny a job offer?
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