In cases where a public-sector employee alleges wrongful termination and the defendant moves to dismiss based on laches, several Illinois Appellate Court opinions apply a bright-line cutoff of six months for determining whether the claim is stale. “The rule is that a delay of longer than six months from the date of termination to the filing of suit is per se unreasonable and will justify dismissal on the ground of laches if: (a) the plaintiff can show no reasonable excuse for the delay; and (b) the employer …