BigUnionGuy
Got the T-Shirt
Per labor law, either side has to petition (for lack of the actual legal term) to "open" the agreement (contract) to be renegotiated....
....otherwise the agreement remains in effect (letters of record and memorandums of understandings included) until the next applicable cycle concludes.
If the Ohio Rider was not renegotiated (which it wasn't in 2018, they skipped it), then it would not need to be re-voted legally in accordance with the National Labor Relations Act of 1935 and The Taft-Hartley Act etc.
National Labor Relations Act of 1935 - Wikipedia
en.wikipedia.org
Taft–Hartley Act - Wikipedia
en.wikipedia.org
You just have to like @Bubblehead for that conclusive answer.
On the other hand.... I would have just posted the applicable contract language and a witty comment.
Section 2.
"Where no such cancellation or termination notice is served and the parties desire to continue said Agreement but also desire to negotiate changes or revisions in this Agreement, either party may serve upon the other a notice at least sixty (60) days prior to July 31, 2023 or July 31st of any subsequent contract year, advising that such party desires to revise or change terms or conditions of such Agreement."
-Bug-