Abstract: An omnidirectionally tilting pedestal mechanism for supporting a chair seat, including a tubular pedestal member, first and second tilt/swivel assemblies, each mounted within the pedestal member for limited tilting movement, a flexure shaft for connecting the first and second tilt/swivel assemblies within the pedestal member, and mounting means for connecting the flexure shaft to a chair seat, such that as the chair seat is tilted, the deflection force acts to tilt one end of the flexure shaft within one of the tilt/swivel assemblies for bowing the flexure shaft between the first and second tilt/swivel assemblies.