Communications
The Federal Election Campaign Act also specifies what forms of communication NALC and other unions can undertake by using Treasury funds at the branch, state, and national levels. Because "content of …communication is determined by the audience for which they are intended," it is important to confine advocacy for or against a particular candidate or party to the restricted class mentioned above. When NALC communicates with its members or restricted class, communications can include fundraising for COLCPE, express advocacy ("Vote for Candidate X"), as well any coordinated communications with a particular candidate ("Candidate Z is having a rally at the VFW Hall Thursday night at 7:00 PM" can appear in your branch newsletter.

Communicating with the General Public
When a labor union communicates with the general public, it must do so as issue advocacy—providing information about a particular issue without supporting a candidate or party ("Contact your Representative about the need for responsible postal regulations.") These regulations affect publications and voter education, candidate endorsements and appearances, voter registration programs, and Get-Out-The-Vote efforts.

Communicating with Members
NALC and other labor unions can use their treasury funds to communicate with their members about specific candidates using a variety of means. These can include: branch newsletters with an article about the endorsed candidate; a flyer comparing the candidates; a letter from the Branch or State President encouraging members to vote a certain way; and phone calls from the union to encourage members and their families to vote for the union-recommended or union-endorsed candidate. A candidate does not have to be officially endorsed by the members to communicate with members about his campaign. The only restriction for this express advocacy is that the newsletter, flyer, or phone call be limited to union members, staff, and their families. The union cannot leaflet non-members or the general public at the Post Office gates that expressly call for the victory or defeat of a candidate.

When the union invites a candidate to speak at a rally or a meeting, the membership must be mindful of these limits. A person running for federal office can advocate his or her candidacy and solicit campaign contributions from attendees, and the union is not obligated to invite the opponent as long as only the restricted class is present. Similarly, a member or the union as a whole can advocate the campaign of the invited speaker or discourage support of the opponent—again only if the audience is made up of members, staff, and their families.