The Absence Risk Barometer produced by absence management company Active Health Partners revealed its ‘Simple Risk Estimate' had increased from 44.17 to 86.58 in the three months from July to September 2009.
Anything over 50 is normally regarded as something businesses should be very worried about.
During the same period absence due to infections rose 96%.
Bruce Robinson, chief executive, AHP comments: "Swine flu related-absences are having an impact on businesses due to the number of working days lost. As the incidence of swine flu is widely expected to increase over the coming winter months, organisations should ensure they have contingency plans in place to ensure minimum disruption to their operations."
Each swine flu absence results in an average of 5.16 working days lost in the private sector and 5.88 days lost in the public sector.
