Agree with PattyPA...
Ask yourself this question.. for an injury/illness to be compensable under WC rules, it must meet the AOE/COE standard... Arising Out of your Employment, and in the Course Of performing your Employment (job duties). Can't be just one side of that, must meet both criteria.
Do you believe, with your Dr, your heart attack was under those conditions ?
''job was to pay 18.00 but boss only paid 13.00 cause serious stress''
You may have action with the labor board. You can file a claim there for not receiving agreed upon wages. There may or may not be any action you can take regarding the 'reasonable accommodation'.