There's a volunteer worker who volunteers closely two diff organizations. If one organization receives donations and can't utilize them, he'll bring it over to the other organization that maybe can, and vice versa.

Can it be said that he serves as a "liaison" for both organizations?
Or what would be the proper way to use liaison in a sentence.
Thanks in advance

Normally, we use the word 'liaison' with the preposition 'between' or 'with' to identify someone who works with two or more groups to get one job done. Here are two examples:

Natalie is our association's liaison with the web hosting company because she can explain what we want on our website in detail.

John is the liaison between our homeowners' group and the county sheriff's office, dealing with non-emergency situations.

So say like

David serves as the liaison between Quality care for Children and the Salvation Army by bringing over food items that cannot be utilized at one organization to the other and vice versa.
Does that sentence make sense, or how do you think it could be improved?

I'd write this:

David serves as the liaison between Quality Care for Children and the Salvation Army by coordinating food supplies so that each organization receives the amounts it needs.

He himself would probably not do the actual transporting of food; he would be the organizer (or coordinator) for the food supply levels of the organizations.

Delivery of food to or between organizations would be done by others, at David's direction.

Well he does volunteer as a driver of the truck. If one organization gets food items/donations that they can't use, and rather than throwing it away, he'll bring it to the other organization he volunteers for who may accept it.

If he has a group working with/for him, you could call him a volunteer AND a liaison.

Liaison:

noun
▸the exchange of information between people or organizations, so that they understand each other and work well together more...
▸the job of exchanging information about the work of an organization with people who are affected by it more...


http://www.onelook.com/?w=liaison&ls=a

thank you for your help, Writeacher. I appreciate it.

You're very welcome!

Yes, it can be said that the volunteer worker serves as a "liaison" for both organizations. The term "liaison" refers to a person who acts as a connection or intermediary between two or more people or groups. In this case, the volunteer worker is facilitating communication and cooperation between the two organizations by transferring donations from one to the other.

To use "liaison" in a sentence, you could say: "The volunteer worker serves as a liaison between the two organizations, ensuring that unused donations find their way to the organization that can benefit from them." This sentence conveys the idea that the volunteer worker acts as a bridge, enabling the smooth exchange of resources between the organizations.