No. But then it doesn't stop the employer following through with the discplinary action either, based on the events surrounding the period(s) of absence for sickness. Resigning a job requires giving due notice.
no, but if you apply for another job, and they write to your previous employer asking for a reference, they are entitled to say left pending disciplinary.
Twenty20 is correct - as long as the reference is factually correct the employer can give a bad reference.
Otherwise the reference it totally worthless.
:Providing you give the proper notice -usually but not always a month - the employer won't refuse to accept it. They may continue with the disciplinary however.
I used to work for a major oil company and we regularly were advised by Human Resources to reject people's resignations if they were going through the discliplinary process - and give that as the reason why we couldn't accept it.