Section 243.738 - Strikes by employees of mass transit districts, transportation districts and municipal bus systems(1) It is unlawful for any employee of a mass transit district, transportation district or municipal bus system to strike or recognize a picket line of a labor organization while in the performance of official duties.(2) As used in this section: (a) "Mass transit district" means a mass transit district established under ORS 267.010 to 267.394.(b) "Transportation district" means a transportation district established under ORS 267.510 to 267.650.