"Recently we had a group split from us," said Barbara Getz, who said she is head of the health and safety team for the OUR Walmart grouping that is sticking with UFCW.
She said the union has been "unwavering" in its support.
The other group is relaunching with the OUR Walmart name and new funding partners, said Dan Schlademan, a former UFCW employee who said he is co-director of this employee group.
"The organization is moving forward with 20-plus partners and a plan to continue its work," said Schlademan. Those partners are workers' rights organizations.
Some large labor unions have backed minimum wage retail and restaurant workers' efforts to get higher pay and better benefits from large employers such as Wal-Mart and McDonald's Corp, without the certainty of adding members from those hard-to-organize industries.
The UFCW-backed OUR Walmart was instrumental in winning a pay raise for half a million U.S. Wal-Mart workers earlier this year, but the prospect of unionizing Wal-Mart's workforce is seen as an elusive goal. UFCW recently cut funding to OUR Walmart, according to Schlademan.
Schlademan said his side includes the original board and all of the worker members.
They include Cindy Murray, a founding OUR Walmart board member and Walmart employee from rural Maryland.
"We are the true group ... We're widening our horizons," said Murray, who added that her side would welcome a partnership with UFCW.