C.R.S. § 30-10-109: Office hours.

All county offices must be kept open for the transaction of county business on the days and during the hours designated by resolution of the board of county commissioners. However, all clerks of court, clerk and recorders, and sheriffs are subject, at all times, to the command of the people, and shall at all hours, night and day, be prepared to attend such duties as may reasonably be required of them.