If your business has 30 or more employees, then yes!
Not only this, but according to the Building Fire Safety Regulation 2008, if your building falls under any of the following categories, you are required to appoint a Fire Safety Advisor. These classes are determined by the Building Code of Australia (BCA) and relate to the building's use, size, and occupancy levels. A high occupancy building means any of the following buildings, other than to which section 32 applies -
(a)a class 2 or 3 building more than 25m high;
(b)a class 2, 3, 5, 6, 7b, 8, 9a, or 9b building that is a workplace—
(i)in the following industries—
(A)building and construction;
(B)community services;
(C)electricity, gas and water;
(D)financial, property and business services;
(E)manufacturing;
(F)public administration;
(G)recreational services, personal services and other services;
(H)retail and wholesale trade;
(I)transport and storage; and
(ii)30 or more workers are normally employed at the workplace during the current year, or are likely to be employed at the workplace for a total of any 40 days during the year;
(c)a class 6 or 9b building that the commissioner has decided is an at risk licensed building under section 104KD of the Fire Service Act.