Your intergroup/service board treasurer can get actively involved with all the group treasurers so that oversight of group contributions is easier. Voicemail or email contact can facilitate this process. The intergroup treasurer can visit non-contributing meetings and share about self-support and read from the Seventh Tradition of OA pamphlet. Groups that do contribute should be sent acknowledgements or thank you notes for their contributions. Read Fundraising and Prudent Reserve Guidelines for Groups and Service Bodies for more information.