Conn. Agencies Regs. § 19-394a-3
Fire exit drills shall be held to familiarize all occupants with the drill procedure and to have the conduct of the drill a matter of established routine. Drills shall be conducted by each employer covering all work shifts in all buildings, twice a year, except for single story buildings where one drill per year shall be required. Essential personnel working on such industrial processes which are verified to be continuous or of a hazardous nature, or which may not be safely left unattended, shall be exempt. In order that such employees on these operations may also become familiar with alternate means of egress, provision shall be made, at some time on the day of the drill, for such employees to leave their work areas by exits other than those normally used.
(See 1961 Supp. § 19-387a.)
Conn. Agencies Regs. § 19-394a-3