In general, enrollments and enrollment changes take effect on the first day of the pay period that begins after your employing office receives your completed SF 2809 and follows a pay period during any part of which you were in a pay status. (The pay status requirement doesn't apply to a change from self and family to self only.)
Open Season. Your employing office can give you the specific day on which your enrollment or enrollment change will take effect.
Change from Self Only to Self and Family Due to the Birth or Addition of a Child as a Now Family Member. This change takes effect on the first day of the pay period in which the child is born or becomes an eligible family member, regardless of your pay status.
Cancellation. see section titled "Cancellation".
Additional information about effective dates appears in the section titled "Table of Permissible Changes in Enrollment".
**Note: If you change plans or change options in your current plan, and you or a family member covered by your prior plan or option are confined in a hospital on the date your enrollment change takes effect, benefits of the prior plan or option will continue temporarily for the confined person. Benefits will continue (unless they are exhausted) for each additional day of continuous confinement through the 91st day after the date your enrollment change takes effect. Benefits of the new plan or option will not begin for the confined person until the day after his or her confinement ends or the 92nd day after the date your enrollment change takes effect, whichever is earlier.