[2] His father is an architect, and his mother worked as an educator at Trinity College School, which he attended.

[6][2] Piccini has been Ontario’s Minister of Labour, Immigration, Training & Skills Development since September 22, 2023.

[6] On November 14, 2023, Piccini introduced Ontario's Working for Workers Four Act, his first as Minister of Labour, Immigration, Training and Skills Development.

[7] The bill received Royal Assent on March 21, 2024,[8] introducing changes to cancer coverage for firefighters and fire investigators by lowering the employment period needed to receive compensation when diagnosed with esophageal cancer from 25 to 15 years.

The changes also required transparency in tip-sharing practices and salary disclosures in job postings[9][10], banned the use of Canadian work experience as a job application requirement, improved oversight of third-party assessments for international qualifications, clarified vacation pay provisions, and allowed inflation-adjusted increases to Workplace Safety and Insurance Board benefits.