Unionized Lufthansa pilots have threatened to strike after labor negotiations failed late Sept. 1. The union has not yet specified the anticipated start date and time of the strike. The union often gives less than 72 hours’ notice ahead of threatened strikes.

Two planned London Underground (Tube) strikes set for Sept. 8 and 10 have been suspended indefinitely.

The Spanish Union of Train Drivers and Railway Workers has called on workers employed by the National Rail Network to stage a series of 24-hour strikes on Sept. 4, 11, 14 and 15 to protest working conditions. Service levels will likely vary by location, but are unlikely to be crippling …