Nova Scotia's Liberal leader is calling for more co-operation among the four Atlantic provinces when it comes to labour mobility.

Speaking to party members Saturday in Halifax, Stephen McNeil said he wants skilled workers to be able to move throughout Atlantic Canada with ease.

MacNeil says certain professions have varying certifications in different provinces and that "makes absolutely no sense."

He said with some big inter-provincial projects on the horizon, all four provinces could capitalize if certifications were streamlined.

MacNeil also said that he's not in favour of merging the Maritime provinces, as several East Coast senators have suggested in recent months.