Here are the statutes that specifically spell out the workers compensation protections for the volunteer fire fighters.  Ive also added the link to Selected Law Pertaining to Nebraska’s Firefighters and Fire Departments published by Nebraska Forest Service.  The pasted section is from page 50 of that PDF.

(3) Volunteer firefighters of any fire department of any rural or suburban fire protection district, city, village, or nonprofit corporation, which fire department is organized under the laws of the State of Nebraska. Such volunteers shall be deemed employees of such rural or suburban fire protection district, city, village, or nonprofit corporation while in the performance of their duties as members of such department and shall be considered as having entered and as acting in the regular course and scope of their employment from the instant such persons commence responding to a call to active duty, whether to a fire station or other place where firefighting equipment that their company or unit is to use is located or to any activities that the volunteer firefighters may be directed to do by the chief of the fire department or some person authorized to act for such chief. Such volunteers shall be deemed employees of such rural or suburban fire protection district, city, village, or nonprofit corporation until their return to the location from which they were initially called to active duty or until they engage in any activity beyond the scope of the performance of their duties, whichever occurs first.

Members of such volunteer fire department, before they are entitled to benefits under the Nebraska Workers’ Compensation Act, shall be recommended by the chief of the fire department or some person authorized to act for such chief for membership therein to the board of directors of the rural or suburban fire protection district or nonprofit corporation, the mayor and city commission, the mayor and council, or the chairperson and board of trustees, as the case may be, and upon confirmation shall be deemed employees of such entity. Members of such fire department after confirmation to membership may be removed by a majority vote of the entity’s board of directors or governing body and thereafter shall not be considered employees of such entity. Firefighters of any fire department of any rural or suburban fire protection district, nonprofit corporation, city, or village shall be considered as acting in the performance and within the course and scope of their employment when performing activities outside of the corporate limits of their
respective districts, cities, or villages, but only if directed to do so by the chief of the fire department or some person authorized to act for such chief;

http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1065&context=nebforestpubs

LAWS PERTAINING TO
NEBRASKA FIRE DEPARTMENTS
October, 2009
Prepared by
Nebraska Forest Service – Wildland Fire Protection Section
Nebraska Forest Service – Fire Control
Institute of Agriculture and Natural Resources
University of Nebraska – Lincoln
105 Entomology Hall – East Campus
Post Office Box 830815
Lincoln, Nebraska 68583-0815
Office – 402-472-2944 – FAX – 402-472-2964
http://www.nfs.unl.edu