Nearly 50,000 members of the International Longshoremen’s Association (ILA) are on strike Tuesday against the nation’s East and Gulf Coast ports, according to the union, choking off the flow of many of the nation’s imports and exports in what could become America’s most disruptive work stoppage in decades.

Dozens of ports along the East and Gulf Coasts of the US have shut down as thousands of dock workers strike over wages and technology that could replace jobs, according to CNBC. The strike, which began just past midnight on October 1st,