EDMONTON - Federal NDP leader Thomas Mulcair will visit Alberta at the end of May to discuss the oilsands, says Alberta NDP leader Brian Mason, who secured the arrangement.

"Tom and I had a conversation over the phone a couple of days ago, and I invited him to come to Alberta. I'm pleased that he agreed to come," said Mason Friday.

Mulcair is slated to arrive in Alberta late in the evening next Wednesday and will spend Thursday in the province, meeting with political and business leaders. Mason and Mulcair will also have an opportunity to sit down together.

"I hope that Tom's visit to Alberta will be very productive, both for Albertans and for all Canadians," Mason said.

On Thursday, Premier Alison Redford said Mulcair is playing politics with false assumptions and absurd comments.

The fiery national NDP leader has charged that failure to enforce environmental regulation in the province's oilsands is benefiting oil companies and in turn pushing the Canadian dollar up and the Canadian economy down.

Redford said she also plans to have a "constructive conversation" with Mulcair when he visits the West.

"Well, once he's actually seen the oilsands and once he's actually been briefed, then I'm prepared to try to have a constructive conversation with him so we'll see how it goes. But I think he's got some work to do first," Redford said.