Helena Jaczek

In 2003, Jaczek ran as the Liberal candidate in the riding of Oak Ridges. Issues included tax rates and health care.[4] She lost to incumbent Frank Klees by 2,521 votes.[5] In 2007, Jaczek won the newly formed riding of Oak Ridges—Markham by 7,013 votes beating Conservative candidate Phil Bannon and New Democrat Janice Hagan. She was re-elected in the 2011, and 2014 elections. At the time, Oak Ridges-Markham was the most populous riding in the province until redistribution in 2018.

Jaczek was appointed as a Parliamentary assistant (PA) to the Minister of Health Promotion on October 30, 2007. On September 11, 2009, she was made PA to the Minister of Environment. In February 2013, Jaczek was appointed as PA to the Minister of Health and Long-Term Care.[6] From 2011 to 2014, she served as chair of the Liberal Caucus, under the premierships of both Dalton McGuinty and Kathleen Wynne. Jaczek was a member of several Standing Committees: Public Accounts, Social Policy, Government Agencies, Finance and Economic Affairs.

Jaczek was also a member of the Select Committee on Mental Health and Addictions. This special Committee held public hearings around the province, visiting mental health and addictions facilities and several First Nations communities to better understand the Mental Health and Addictions program challenges facing Ontario.

Jaczek brought forward several Private Member's Bills. In 2009, she proposed a private member's bill, Bill 117, that would have prohibited riders under the age of 15 from riding motorcycles. In September 2010, she co-sponsored a private member's bill with PC and NDP MPPs to amend the Arthur Wishart Act (Franchise Disclosure) 2000, to better protect prospective franchisees. In March 2012, Jaczek introduced a private member's bill, Bill 40, to proclaim March 26 Epilepsy Awareness Day. She also introduced a private member's resolution to encourage organ donations. In February 2013, she introduced Bill 16, "An Act to amend the Municipal Act, 2001 to provide that the head of council of The Regional Municipality of York must be elected." On June 6, 2013, the bill received the support of all three parties, but it died on the order paper because of the 2014 Ontario General Election. However, in November 2016, the government introduced legislation that included a provision to ensure the direct election of chair and CEO of the Regional Municipality of York. This was subsequently overturned by the incoming PC government of Premier Doug Ford.

On June 24, 2014, she was appointed by Premier Kathleen Wynne as the Minister of Community and Social Services and was the Vice Chair of Health, Education and Social Policy Cabinet Committee.[7]

As a Cabinet Minister, Jaczek led the government's plan to reform social assistance, which includes overseeing Ontario's Basic Income Pilot as well as the establishment of the Income Security Reform Working Group who was tasked with developing ideas for a more holistic, client-centred approach to a broader income security. Jaczek has also overseen considerable reform in the developmental services sector, which includes the closing of all sheltered workshops in Ontario and has led the implementation of Ontario's Strategy to End Human Trafficking.

Jaczek was appointed Chair of Cabinet in addition to her role as Minister of Community and Social Services on January 17, 2018.

On February 26, 2018, she was appointed Minister of Health and Long-Term Care. During her time as Minister, the provincial government made an investment of $2.1 billion in mental health and addiction services.[8] This was the largest provincial investment in mental health and addictions in Canadian history. The purpose of the funding was  improving the quality of and access to community-based services, including the creation of 15 additional youth wellness hubs and more supportive housing.[9]

In the 2018 general election, Jaczek ran for re-election in the new district of Markham—Stouffville which encompassed the eastern portion of her old riding, but was defeated by Progressive Conservative Paul Calandra.

In June 2019, there was speculation that Jaczek might enter federal politics and run as a Liberal Party of Canada candidate in Markham—Stouffville in the 2019 Canadian federal election, against the incumbent Independent MP Jane Philpott. In July 2019, Jaczek announced that she would be seeking the Liberal Party nomination in the riding.[10]

During the 43rd Canadian Parliament, Jaczek introduced one private members bill, Bill C-303 An Act to establish a national strategy for health data collection, which sought to require the Minister of Health to develop a national strategy for the collection of health data, including the creation a national public health database for the purposes of research and policy development.[11] though the Parliament ended before it was brought to a vote. In Budget 2022,[12] the federal government committed to working with provinces and territories to ensure that Canada's healthcare system is underpinned by health data that will support health care system improvements and Canadians' access to their own personal data.

Jaczek served on the Standing Committee on Industry, Science and Technology (INDU) and the Standing Committee on Transport, Infrastructure and Communities (TRAN). During the COVID-19 pandemic, Jaczek was invited to take part in the Standing Committee on Health.[13]

On September 20, 2021, Jaczek was re-elected as the Member of Parliament for Markham—Stouffville.[14]

As part of the Standing Committee on Health, Jaczek used her expertise in medicine and public health to contribute to Canada's response to COVID-19, within the country and globally. She advocated for funding transparency, greater safety on airlines and better public health standards in the agricultural sector.[15]

On October 16, 2021, Jaczek was appointed as the Minister responsible for the Federal Economic Development Agency for Southern Ontario.[16] Jaczek also serves as the vice-chair of the Treasury Board, Vice-chair of the Cabinet Committee on Reconciliation and a member of the Cabinet Committee on Operations, and the Cabinet Committee for Economy, Inclusion and Climate "A".

On August 31, 2022, Jaczek swapped portfolios with Filomena Tassi, becoming Minister of Public Services and Procurement and Receiver General for Canada while Tassi became Minister responsible for the Federal Economic Development Agency for Southern Ontario; the cabinet shuffle had been held at Tassi's request, having asked to be moved to a position with a lighter workload in order to deal with a family health matter.[17]

On 25 July 2023, she announced she would not be running in the next election.[18]