8(3)With a view to avoiding duplication of assessments to which an employer may be liable on the earnings of workers who are doing or performing work part of the time in New Brunswick and part of the time in another province or territory of Canada, the Commission may make an agreement with the workers’ compensation authority of that province or territory for such adjustment of assessment as is equitable and may reimburse such other authority for any payment of compensation, rehabilitation or medical aid made by it under the agreement, and may, in order to give effect to the agreement, relieve an employer from assessment or reduce the amount thereof.