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NextStar Energy workers have a new collective agreement

AM800-News-NextStar-New-Battery-Pack-Line-June-2026 NextStar Energy begins production on new battery pack line, June 2026. (NextStar Energy)

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Unifor Local 444 is calling it “a well-deserved agreement” for its members at NextStar Energy in Windsor.

The workers at the east end battery plant ratified a new three-year collective agreement on Thursday.

According to a social media post from Local 444, the deal includes significant gains across the board.

The union says the agreement has wage increases, accelerated wage progression, increased benefits, productivity/signing bonuses, annual inflation protection bonuses, maintained performance bonuses, and enhanced skilled trades compensation.

The deal also includes improved pension contributions and workplace and language improvements.

A tentative deal was reached between the union and company late last month.

In July 2025, workers at the plant ratified a one-year agreement that included a one-time wage increase of five per cent, lump sum payments, and pension improvements.

Local 444 represents 800 workers at the battery facility.

NextStar Battery Plant grand opening A NextStar Energy battery cell. (Source: NextStar Energy)