As bargaining continued Friday, union members at GE Transportation filed paperwork authorizing a strike.

Local 506 of the United Electrical, Radio and Machine Workers of America has authorized a strike against the GE Transportation plant in Erie.

There's been no formal announcement of that notice, not from the union and not from the company.

Instead, the record that the company filed that paperwork can be found in a video posted to the UE 506 Facebook page on Friday.

In that video, punctuated by the sounds of bells and horns, 100 or more union members, most wearing UE shirts, can be seen delivering a strike notice to an office building at GE Transportation's Erie campus.

In the video, Matt McCracken, a member of the union's executive board, said the strike notice is in reference to a November 2016 grievance that concerns the subcontracting and transfer of work.

Neither the union nor the company had any comment about the strike notice Monday afternoon.

Sources did say, however, that work continued as usual inside the plant as negotiations between the company and its union workers inched closer to a midnight deadline for decision bargaining.

At stake is an opportunity for the union to convince the company to back away from its decision, announced July 27, to lay off 570 workers and shut down locomotive production in Erie.

Turn to Tuesday's Erie Times-News and GoErie.com for more coverage.