A group health insurance is beneficial in several ways. You have to pay one single premium amount to secure a group of employees against any medical expenses. You can even cover their spouses and children in the same policy. So, there is a lot less hassle and documentation with just one group policy instead of many.
A group health insurance policy can be taken by an employer or a homogenous employee group.
Yes, the spouses and children of the insured individual are covered under group medical insurance policy.