Unions representing over 3,000 LIRR workers could walk out on September 18 unless they receive higher raises than those already negotiated with the MTA,

“If a strike happens, LIRR service would be forced to shut down entirely,” the MTA said in Thursday social media posts. “Unfortunately, there is no substitute for the Long Island Rail Road, and its shutdown will cause severe congestion and delays. Avoid nonessential travel and work from home if possible.”