This made me chuckle a bit. The polish government can hardly contract appropriate levels coal so that people who burn it to heat their homes have trouble replenishing their supplies before winter. Just yesterday they came up with 50% tax on excessive income for companies which employ 250+ people, so clearly they aren't capable of planning months or years ahead, let it be the effects of such a strike on NS.
On the other hand, if the US government came up with the idea, Poland would be happy to execute it. Government wouldn't think much about it, they wouldn't even ask for anything in return.