Need Help On Joining New Company Issue

Reading through the question and answer on Dinesh's friend's case and worry on dual employeement, I do have some doubt in mind.
Practically, was the friends being paid and acknowledge for receiving the payment?
If the ex-company cannot prove that the friend was paid during that month, then was it an employrement?

Dear Sumit,
Under the circumstances as explained by you, we feel there is no harm as to your Friend cannot disclose all the facts to New Company's HR & his present Manager.
We are not much aware as what is required to be done under such type of circumstances.
In fact, there can be another solution, if the HR or Management of old Company can be requested to show this period as "scrutiny Period" where the employee was not Physically on their Roll.
Seniors contributing Members are requested to offer their views also.
Regards
Optimus Consultants

There are few pertinent questions to be answered.
Mere 'resignation accepted' does not suo motto means relieved. What is to be noted is the 'last working day' after completion of relevant notice period, unless otherwise waived/cut short or the actual date of separation as per the roll. Till such time an employee will be considered as on roll and therefore would be entitled for salary, if it is not marked absent. In the absence of relevant details it is difficult to draw conclusions and to suggest meaningfully. The onus on whether or not any dual employment exists or not would depend on answers to these questions.

Hi,
Ask your friend to Old HR to issue the letter on latest date with details of employment period in the body of letter, so automatically this period indicates the last working day in his employment period.
in this case both parties purpose will be served.
Thanks
TaskPro Solutions