Please provide reference of legal requirements for quantity of safety officers required for a company /per employee

As Franks states let the forum know your industry and many folk with provide you with examples of their work place / industry which may help you.

Nothing prescriptive in British legislation.

The follwing link to ASSE for staffing issues may be of some use, including methodologies.
http://www.asse.org/prof.../she-staffing-issues.php

For example, for India, the Factories Act 1948 as amended, Section 40-B is about Safety Officers

(1) In every factory :-
wherein one thousand or more workers are ordinarily employed, or

wherein, in the opinion of the State Government, any manufacturing process or operation is carried on, which process or operation involves any risk of bodily injury, poisoning or disease or any other hazard to health, to the person employed in the factory, the occupier shall, i f so required by the State Government by notification in Official Gazette, employ such number of Safety Officers as may be specified in that notification.

(2) The duties, qualifications and conditions of service of Safety Officers shall be such as may be prescribed by the State Government.

The model rules provide the prescriptive aspects:-
http://www.dgfasli.nic.i..._ch4.htm#safety_officers

In the UK there was formerly a legal requirement in Regulation 5 of the Construction (General Provisions) Regulations for any contractor who normally employed more than 20 at the same time to appoint one or more experienced "safety supervisors" but not necessarily full time and not necessarily in house.

The tripartite Construction Industry Advisory Committee issued guidance on numbers of advisers and their competence in 1983. (Long since out of print)

Larger firms e.g. 700+ employees - a comprensive in house safety department with professional safety advisers and possibly others e.g. site safety supervisors. "Occupational physicians and nurses, hygienists and other specialists....."

Medium-sized firms - in house department with one or two full-time professional safety advisers. Safety consultancy may be more appropriate for the needs of some employers.


Smaller firms, e.g. <60 employees, the service of a safety group, or safety consultancy may be particularly appropriate. Safety supervisors who have other duties may play an important role but are likely to need professional support.

As the importance of occupational health risks has been better recognised, then any 30 year old recommendations of CONIAC are likely to understate what contractors need in 2014, but ultimately what, who and how many people will depend on safety culture, line management ownership of H&S, and the competence of line managers and those at the sharp end.

Tusharcool, in your sector, also need to focus particularly on process risks that may be associated with "low probability, high probability" events.