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A player can be placed on the Major League Paternity Leave List when he leaves his club to attend the birth of his child. The childbirth must be either imminent or have occurred within the previous 48 hours.
A player can be placed on the Paternity Leave List any time during the MLB regular season and post-season.
A player must remain on the Paternity Leave List for at least 24 hours, but no more than 72 hours.
A player can be transferred from the Paternity Leave List to the Bereavement/Family Medical Emergency List if the childbirth results in a death or medical complication. For players who are transferred from the Paternity Leave List to the Bereavement/Family Medical Emergency List, time spent on the Paternity Leave List counts toward the maximum number of days permitted to be spent by the player on the Bereavement/Family Medical Emergency List.
The Paternity Leave List functions like the 7-day or 10-day Injured List, in that a player on the Paternity Leave List does not count against his club's Active List, so he can be replaced by another player while on the Paternity Leave List. He does count against his club's Reserve List (40-man roster), however.
An MLB player continues to accrue MLB service time while on the list.