Medicare supplement plans are there only to help you to pay your excess medical bill that makes you worried. These types of bills are left aside by the main or principal medical bill. So to pay this bill you can use medical supplement plans as your helping aid. As the name suggests, it is a supplement plan that is bought along with an original Medicare plan. In an original plan there always remains a gap and it cannot pay for the total bill charged. Therefore there is the need for a supplement plan to clear off your dues. It actually bridges the gap between the policy coverage of the original plan and the total bill charged. Therefore a supplement plan is always needed for you if you need to get full medical coverage from your insurance plan.Now you surely want to have some basic know employment laws uk ledge about this plan before you set your mind to do this policy. According to the rules the Medicare policy coverage starts at the age of 65. Actually if you have purchased a Medicare policy then in normal state your Medicare coverage would start on the 1st day of the month you turn 65. So it means that if you reach the age of 65 on 20th of May your policy coverage would start on 1st of the same month. The fact is that the Medicare policies pays for most of your medical bills but still there are some costs that are not paid by your Original Medicare policy as they are not the part of your policy coverage. These costs are added in bill for the services that you receive. Therefore you need to pay for that extra money from your own pocket even if you are having an Original Medicare plan.