In our organization, probation is for 3 months. After this period, based on performance, we confirm all employees. One of the employees is refusing to accept the confirmation. What should I do in such a case?
Yes, maybe this does not directly come under willful insubordination, but then that's exactly why I suggest a few options with the right to use the relevant sections remaining with the HR. I also gave a few suggestions and there indeed might be many more as your expertise pointed out.
Probation is a period of time wherein both the company and the new joiner evaluate suitability and fitment. And this needs to be seen holistically. A great performer who is bad for the culture, in my book, is NOT a right fit. However, the human part of HR also involves giving chances, and hence, an extension of probation to give the person a chance to correct the attitudinal issues is suggested.
Extension of probation is also not unheard of. In fact, most offer letters/appointment letters I have seen actually mention that 'probation can be extended based on evaluation' as well as unambiguously mention that "completion of the probation period does not automatically guarantee confirmation." Yes, if the company does not inform the employee about an extension of probation with a reasonable explanation, it could be however deemed that the employee is confirmed. Basically, it depends upon the way an appointment letter is drafted, and the interpretation of the case.