Liability insurance, completion insurance

Public liability insurance is where the production company buy insurance to protect themselves against legal action if a member of the general public is injured or harmed during the making of your TV show.

Completion insurance is where you buy insurance to protect yourself against money loss and legal action if your show is not completed or cannot be by the due date promised to the general public.

I think they should all have completion insurance because if they promise the general public through advertising through the user of radio, TV and the internet they should deliver or else thats false advertising.

The prices would vary for different productions, this is probably based upon; the budget, the advertising, and public expectations. A smaller channel like the shopping channel would have not payed a lot for completion insurance whereas a film producer who are producing a block buster hit would pay a lot for it.

Legal procedures in post production are put in place for the safety of the people involved and to make sure they do not break the law during post production.

You would have to also get insurance for things you do and the people you are working with so if they get injured or broken then you are insured and safe, if you are not insured they can sue you. Legal issues arise whenever you are doing something dangerous where you can get hurt, or just in general.  The lighting up ahead can fall on people and they can snap their necks so you need to have public liability insurance to protect yourself from them suing you and if they do you have to pay the bare minimum.