The 40th UAW Constitutional Convention does not appear to be scheduled yet in the sources I found; the most recent UAW convention coverage I found is for the 39th Constitutional Convention, which opened in Detroit on June 15, 2026 and then closed out on June 17, 2026.

What that means

  • The UAW’s 39th Constitutional Convention is the latest one confirmed in current coverage.
  • I did not find a published date for the 40th convention in the available recent sources.

Closest confirmed timing

  • 39th Constitutional Convention opening: Monday, June 15, 2026, in Detroit.
  • 39th Constitutional Convention closing coverage: June 17, 2026.

TL;DR

The 40th UAW Constitutional Convention hasn’t been publicly dated in the sources I found; the latest confirmed convention was the 39th, held in Detroit in mid-June 2026.