The Transport and General Workers' Union had identified nearly 30 employers as not matching pay deals awarded to local government employees despite adopting a policy of agreeing to follow local government pay rates.
The union threatened to name and shame the organisations and call a strike if they failed to implement the new pay structure by 12 November. But all outstanding cases were resolved before the deadline.
"There are now no remaining examples of housing associations or voluntary-sector organisations failing to pay up," said the union's national organiser Jack Dromey.
"We identified close to 30 rogues over three months but we have achieved our objectives in full."