MPs may still be back in their ridings for a parliamentary break, but the federal political calendar is shaping up to be a busy one this week.

Monday

The trial of suspended senator Mike Duffy will begin its second week on Monday. The Crown is expected to call on new witnesses, including Senate human resources staffer Sonia Makhlouf and Duffy's friend Gerald Donohue, who the Crown claims Duffy paid with Senate money to carry out work on his behalf. 

Government sources tell CTV News that Ontario Premier Kathleen Wynne will announce a cap-and-trade plan for the province at a news conference in Toronto Monday. The plan would put a price on carbon in an effort to reduce greenhouse gas emissions.

The announcement means Ontario will join B.C. and Quebec in establishing a provincial carbon pricing model. While B.C. introduced a carbon tax in 2008, Quebec just implemented its cap-and-trade system in January.

Tuesday 

Wynne is expected to finalize the cap-and-trade agreement with Quebec Premier Philippe Couillard in Quebec City on Tuesday, as premiers meet to discuss climate change. With the United Nations climate change summit coming up later this year in Paris, the federal government is expected to be keeping a close on the premiers' meeting. 

Also Tuesday, Foreign Minister Rob Nicholson begins two days of meetings with his G7 counterparts in Lubeck, Germany. Nicholson is expected to press Canada’s allies for details on the deal to prevent Iran from developing nuclear weapons, according to The Canadian Press. 

And India's Prime Minister Narendra Modi will arrive in Canada on Tuesday, for an official visit to Canada. Modi will make stops in Toronto, Ottawa and Vancouver over a span of three days. His trip marks the first bilateral visit to Canada by an Indian prime minister since 1973. 

Wednesday

Bank of Canada Governor Stephen Poloz will announce the central bank's interest rate decision in Ottawa. Canadians will be watching closely for another rate drop. In January, Poloz announced a surprise quarter-point rate cut in response to plummeting oil prices.

Last week, Statistics Canada posted a surprise job gain for March; unemployment remained at 6.8 per cent in March and registered a month-to-month net gain of nearly 29,000 jobs. Avery Shenfeld, chief economist at CIBC World Markets, told The Canadian Press that the job numbers take the pressure off the Bank of Canada to further cut interest rates this week. 

Friday

International Development Minister Christian Paradis will attend the Spring Meetings of the International Montetary Fund and World Bank Group in Washington. Paradis will participate in two talks on development finance on Friday. The meeting runs until Sunday.