The St. John's International Airport Authority has been granted an injunction to keep striking workers from impeding or obstructing anyone trying to access the site.
Eighty-five airport employees have been on strike since Sept. 11.
Justice Valerie Marshall brought down the decision Friday at Supreme Court of Newfoundland and Labrador.
During a hearing on Wednesday, the airport's legal team admitted that passengers and flights have not been affected by the strike, but said picketing has been holding up construction crews building a new access road and parking lot.
Lawyers for the Public Service Alliance of Canada, the union representing the striking workers, countered there's no evidence of that.
The airport's lawyer, Blair Pritchett, had argued the picketers' behaviour constituted legal wrongdoings such as trespassing, being a nuisance, and wilfully endangering the contract between the airport and a construction company doing work on its property.
Union lawyer Greg Kirby countered that the airport had no hard evidence to back up its allegations, other than sworn statements by a number of witnesses.
He had pointed out there was no video showing picketers on airport property, nor any proof — as required by the legal definition of "nuisance" — that the airport has suffered any damage.