Between its inception in 1775 and 1912, postal employees delivered mail seven (7) days a week. In the early 1800s, religious leaders became concerned that employees were forced to work on the “Christian Sabbath,” or Sunday, and began to petition Congress to use its Article I powers to disallow Sunday delivery. This concern reached a fevered pitch in 1810 when Congress required post offices to open at least one hour on Sunday. Outraged that Congress had thus enforced Sunday desecration, religious leaders began to clamor for legislation that would outlaw Sunday operations.