In November, a federal jury found that the International Longshore and Warehouse Union sabotaged shipping traffic and caused productivity to plummet through years of labor slowdowns and stoppages. The union’s workers were pressuring ICTSI Oregon to give them the dockside jobs plugging in, unplugging and monitoring refrigerated containers, taking the so-called “reefer’’ jobs away from an electricians union. Now an Oregon Jury has reduced the initial damages verdict against the longshore union from $93.6 million $19 million. The former operator of the Port of Portland’s container terminal, ICTSI Oregon, has two weeks to either accept the lower amount or seek a new trial solely to determine the appropriate damages.