Span of Control 04
Span of Control 04 : A basic principle of the Incident Command System (ICS). Managing with a reasonable span of control is the responsibility of each supervisor at all levels of ICS. ICS development established a one to seven ratio as the maximum span of control under emergency response conditions. A one to five ratio was established as an optimum. In an emergency response organization, one supervisor should have direct supervisory authority over no more than five subordinate positions . For greatest management efficiency, span of control should be routine in day-to-day staffing patterns for an easy adaptation to emergency or crisis conditions