Dear Ajay,
Assessing Employee Dishonesty
You have to find out whether the employee has been dishonest since the very beginning or at some later date. In case he became dishonest from a later date, it is a matter of great concern. In the latter case, please go into the reasons for the person getting into dishonesty. In such a case, you have to take him, his superior, and colleagues into confidence in a very tactful way and try to solve issues generic to this nature.
Evaluating Opinions and Facts
If the employee is dishonest otherwise, please check if this is an opinion or a conclusion based on some material facts. In case it is an opinion, then whose opinion - whether of his superior or what? Try to find out the basis, adjudicate the same yourself, and if the same is found without a base, please try to convince the concerned that the opinion is without a base (as per your findings) and the same merits to be reviewed lest it affects the morale of the employee concerned and his output. Watch if things are going positively on the part of the opinion makers so as to take remedial measures, if necessary.
Handling Confirmed Dishonesty
If there are relevant facts supporting the contention of one being found dishonest, please collect relevant information with full facts spread over a fairly reasonable time and confront the employee on a one-to-one basis tactfully. Try to impress upon him your appreciation of his being a very good worker and that some of his actions do not align well with his performance. There is an ample requirement for the employee concerned to correct else he may lose his job disgracefully, which will, on one hand, affect his reputation while on the other hand, be harmful to his family's well-being. If he leaves the job in the existing company, the other company may look to the existing company for a reference check on him, which will again hurt him. After this counseling, give him a reasonable time to correct, observe his work and conduct. In case there is still no improvement, it will be prudent to take suitable action to address the issue.
Regards,
S.K. Johri