How long after a redundancy exercise an employer reinstate a post?

There is no set, safe period after a redundancy exercise to reinstate a post.

One of the main risks an employer would have to mitigate against here is an employee arguing, after his or her dismissal for redundancy, that the dismissal was unfair on the basis that the employer didn’t have a genuine redundancy situation. This could be on the basis that the employer didn’t genuinely have a reduced requirement for an employee’s post to carry out work of a particular kind if, in fact, it needed to fill that post fairly soon after the dismissal.

Obviously, the longer the period between the redundancy and the post being reinstated the better, but the risk of claims would still need to be assessed