As a software company your environmental concerns would be disposal of electronic wastes and consumption of papers.
The Health Hazards could be issues associated with ERGONOMICS
The saleft hazards could be Electric shocks and accidents while employees travelling from huose to work place and back on two or four wheelers.
Your EHS policy should be associated with Environmental aspects as well as H&S hazards.
Following is link of one policy of reputed company.
Health and Safety Policy <link updated to site home> ( Search On Cite | Search On Google )
Similarly attached are two more policies.
Hope these are useful.
Thanks & Regards,
30th July 2013 From India, Nasik