Following the election Kennedy was appointed Minister of Justice and Attorney General. He served in this position for a year, during this time he tried to secure federal funding for a new prison for the province as well he worked at streamlining the operations of the criminal justice system.
Minister of Finance
Kennedy was appointed Minister of Finance, President of Treasury Board, Minister Responsible for the Public Service Secretariat and Minister Responsible for the Office of the Chief Information Officer on 31 October 2008, taking over for Tom Marshall who moved to Kennedy's old portfolio of Justice. Kennedy became minister just as the economy was seeing a downturn, due to the late-200s recession. In March 2009, he released his first budget titled; Building on Our Strong Foundation. Kennedy announced that the province recorded a $2.4 billion surplus during the 2008-2009 fiscal year and that the province's debt fell below $8 billion, but that they faced a $750 million deficit for the 2009-2010 fiscal year due to the recession. Kennedy's $6.7 billion budget put a significant focus on health and social services as well it included $800 million in infrastructure spending to stimulate the economy. Kennedy was also tasked with negotiating contracts with public sector employees. The government had agreed to giving workers a 21.5 per cent wage increase over four years and easily signed deals with the majority of the unions representing public sector employees. The province's nurses union however asked for a raise of more than 24 per cent over two years, plus an overhaul of starting and top wage scales. Kennedy told the nurses union that if they did not accept the 21.5 per cent wage increase over four years, given to other public sector employees, by 31 December 2008, that the government's offer may shrink due to the worsening economy. He later told nurses that "if forced to" the government would legislate nurses back to work if they chose to strike. After months of volatile negotiations Kennedy and the nurses union reached a tentative agreement on 26 May 2009, roughly two hours before nurses were expected on picket lines throughout the province. The four-year agreement, which was later accepted by nurses, included an across the board compounded pay raise of 21.5 per cent, plus new step increases for new nurses and senior nurses which represented a total pay increase of 31 per cent and 27 per cent respectively for these groups by the end of the contract.
Minister of Health
In October 2009, Kennedy succeeded Paul Oram as the Minister of Health and Community Services, after Oram announced his retirement from provincial politics. Kennedy's appointment coincided with the 2009 H1N1 flu pandemic. The province started rolling out their mass H1N1 vaccination toward the end of October, which temporarily suspended attention to other health services. While there was originally much confusion and controversy with the mass vaccination, Newfoundland and Labrador ended up vaccinating more of their residents than any other province in Canada. 69 per cent of Newfoundlanders and Labradorians were vaccinated, well above the national average of 41 per cent.
Minister of Natural Resources
Following his re-election in 2011, Kennedy was sworn in as the Minister of Natural Resources, Minister Responsible for the Forestry and Agrifoods Agency and Government House Leader.
Leadership
Kennedy had been thought of as a likely successor to former Premier Williams since entering politics in 2007. When Williams resigned as premier and PC leader on 25 November 2010, Kennedy was thought to be the frontrunner in the leadership race to succeed him. However, on 23 December 2010, Kennedy announced that he would not be seeking the leadership after discussing it with his family. Kennedy endorsed Dunderdale, who was later acclaimed leader of the party.
Post-politics
In 2013, Kennedy joined personal injury law firm, Roebothan McKay Marshall, reviving his law practice.