The DC Circuit Court of Appeals struck down an NLRB ruling that stated a produce company truck driver's rights were violated when he was warned not to cover a surveillance camera in his truck. The driver had contended, and the NLRB agreed, that the admonishment was due to his pro-union position with regards to the Stern Produce Company. The court found however that the company was unambiguous in it's stated policy that the cameras were required to be turned on "at all times", and called the NLRB's reasoning "nonsense".
See "NLRB ruling regarding truck surveillance struck down on appeal", Daniel Wiessner, Reuters, March 27, 2024