Should every Organization maintain the First Aid Kit legally within working place ?

YES YES YES........ First Aid is necessary A MUST

Safety is the top priority of every company. Hence, they must maintain an updated First Aid Kit at all times!

Ethically, yes all of them should hold a First Aid Kit.....

Yes if they believe in safe practices and ethical work culture. In fact , every work unit or section should have their own first aid kit which should be mandatory for the organization and inspected for the worthiness and updated items in the First Aid Kit. LTI can eat up more production cost or man-hours if first aid kit is not in place. Attitude of management is the key for such initiatives.

Thanks for invitation,

Yes of course, it is mandatory for any organization and all "Industrial Security procedures" are usually insist for that.

Yes of course.. this is a must for the people who are involved with the organization. This is mandatory requirement for the health safety of people.  

of course. Safety and health is the first most priority in your working place. Not only FAK but also a trained doctor or Nurse should be there to help in emergency cases. 

It is not always practical to have an in-house medical facility or infirmary in the workplace. To ensure the business is prepared for unexpected injury, federal regulations require businesses to maintain properly stocked first aid kits in convenient areas when an in-house medical facility is not present on the premises.

Your question includes word "legally". With this term the answer would vary for each country.

Each country has a different law for various industries. But in general, it's a good safety practice.