The travelling public could face disruptions at Vancouver's airport on Monday morning if a labour dispute isn't resolved by then for supervisors of workers who refuel airlines.

Kay Sinclair, regional vice-president for the Union of Canadian Transportation Employees, said employer Servisair hasn't demonstrated a willingness to get back to the bargaining table.

"Our observation has been, for the last few days, that they've been more interested in preparing for a lockout than actually sitting down at the table and actually negotiating a contract," Sinclair said Saturday.

Paris-based Servisair served 72-hour lockout notice Thursday to 21 supervisors and administrative staff.

Sinclair said the union, which is part of the Public Service Alliance of Canada, is waiting to hear from a federal conciliator about whether talks will resume on Sunday.

"We don't want the travelling public to be inconvenienced but we obviously don't want to see the workers locked out," she said.

The union has been bargaining with Servisair since last fall.

Wages and hours of work are the main issues involved with the company that provides fuel for Air Canada, WestJet and other airlines in Vancouver as well as 128 locations worldwide.

In April, 73 refuellers and mechanics at Vancouver International Airport reached a contract agreement with Servisair.