Of course, fire rated resistance gypsum partition board alone cannot do the job of totally containing fire and slow the spread. It's just one of the ways / features of fire protection and safety for a premise or building.
Fire protection and safety design and feature of a premise / building must also include fire rated materials ( accessories included ), systems and assemblies in it's construction.
We, as the contractor for office and general renovation will adhere to the building safety by-laws in carrying out our work. Indubitably, the advice and order of the engineer or architect of the work will always prevail in matters of fire protection and safety.