PARIS, Jan. 14 -- French designer Christophe Josse decided on Monday to cancel his catwalk show in Paris next week, blaming weeks of strikes against pension reforms for wrecking his preparations, just as the city gears up for two weeks of fashion events.

The cancellation is an early sign of the disruption that the strikes, which have hit transport services in and around Paris hardest, could cause to Paris Fashion Week, and hotels, retailers and restaurants are already counting the costs.

Men's Fashion Week kicks off on Jan. 14 with presentations by top brands including LVMH's Christian Dior and Louis Vuitton, followed from Jan. 20 by Haute Couture Week, a showcase of one-of-a-kind, handmade designs.

Josse, who was due to take part in H...