What is a Start Date?
All employee benefit records have a start date to signify when the enrollment (or participation) begins. This date becomes the effective date for the deductions created by the enrollment. You can enter the date at the time you enroll employees into benefit plans. If you decide not to specify a start date at the time of enrollment, the employee's eligible date will default (according to the plan entry rules).
The start date can never be before the employee is eligible for the benefit. It can be after the employee is eligible if the date qualifies with the entry rules on the plan.
Example
The start date for your health insurance is May 1, 2000. You are entering an employee who is not eligible until June 1, 2000, the application will display a message that the employee is not eligible until June 1, 2000. To enroll the employee you must use a start date of June 1, 2000 or later.