What does MUM mean in Unions?

This page is about the meanings of the acronym/abbreviation/shorthand MUM in the Community field in general and in the Unions terminology in particular.

Maintenance of Union Membership

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"MUM." Abbreviations.com. STANDS4 LLC, 2014. Web. 21 Dec. 2014. <http://www.abbreviations.com/term/229315>.

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