Do standards have force of law?

Generally speaking, a standard is a recommendation and its application is voluntary.
 
However, it is perfectly reasonable to seek the broadest possible scope of acceptance and application of standards, given the major role they play in interaction between technical and profitable solutions.
 
To be precise, there are some standards that are not to be considered as mere recommendations. These standards must be complied with because of binding reference legislators or authorities may make to them in laws or decrees. Such standards are primarily related to safety, health and environmental protection.