Financial resources: The budget
People resources: The staff co-ordinating and supervising the volunteers
Grants
Corporate sponsorship
Corporate work days

Volunteers work for free, but are not free labour. There are many costs associated with running a volunteer program.

When making financial decisions about your environmental program, think about the life of the program. Is it a 2 year long program or ongoing? Will it need ongoing financial commitment from your organisation's anuual budget?