Dear Srinivas,
An employee has committed misconduct for which you have given him punish by way of "forfeiture of wages and increments". Now if you withhold his seniority for promotion then it will be second punishment for the same misconduct. Jurisprudence demand that there can be only one punishment for one misconduct. Double punishment for single fault is in bad taste. You cannot give second punishment as afterthought.
Your dilemma is that in the recent past that employee was found guilty and you awarded him punishment. Now how can same employee be promoted within months? This is what is in your mind. However, while awarding punishment you or the authorities concerned should have been thoughtful. You could have withheld seniority for say 1-2 years. Why he should pay price for you not being thoughtful?
While delivering justice, there is no place for jealousy. Punishments are called as negative discipline. This negative discipline is for reforming the defaulter. Now if you start giving punishments in instalments out of jealousy, this reformation will not take place and it would defeat very purpose of punishment itself.
Ok...
Dinesh V Divekar