Allowing all employees access to paid sick days would reduce influenza
infections in the workplace, according to a first-of-its-kind analysis by
University of Pittsburgh Graduate School of Public Health modelling experts.
The researchers simulated an influenza epidemic in Pittsburgh and surrounding
Allegheny County and found that universal access to paid sick days would reduce
flu cases in the workplace by nearly 6% and estimated it to be more
effective for small, compared to large, workplaces. The results are reported in
the online version of the American Journal of Public Health.
"The Centers for Disease Control and Prevention recommends that people with
flu stay home for 24 hours after their fever breaks," said lead author Supriya
Kumar, Ph.D, M.P.H, a post-doctoral associate in Pitt Public Health's Department
of Epidemiology. "However, not everyone is able to follow these guidelines. Many
more workers in small workplaces than in large ones lack access to paid sick
days and hence find it difficult to stay home when ill. Our simulations show
that allowing all workers access to paid sick days would reduce illness because
fewer workers get the flu over the course of the season if employees are able to
stay home and keep the virus from being transmitted to their co-workers."
In addition to investigating the impact of universal access to paid sick
days, Dr Kumar and her colleagues looked at an alternative intervention they
termed "flu days," in which all employees had access to one or two paid days to
stay home from work and recover from the flu. The idea behind flu days is that
they encourage employees to stay home longer than they currently do, thus
reducing the potential for them to transmit illness to colleagues at work.
Minimise the risk
Giving employees one flu day resulted in more than a 25% decrease in
influenza infections due to workplace transmission. A two flu-day policy
resulted in a nearly 40% decrease. The researchers found that flu days were more
effective for larger workplaces, defined as having 500 or more employees.
Dr Kumar and her colleagues used a modelling system developed at Pitt Public
Health called "Framework for Reconstructing Epidemic Dynamics" (FRED), which is
part of work housed in Pitt's Modelling of Infectious Disease Agents Study
(MIDAS) National Center of Excellence. MIDAS was initiated by the National
Institute of General Medical Sciences to investigate novel computational and
mathematical models of existing and emerging infectious diseases.
"Our mission is to protect the US and the global community against
communicable infectious disease threats," said senior author Donald S Burke,
M.D, Pitt Public Health dean and UPMC-Jonas Salk Chair of Global Health. "Our
modelling work allows scientists both here and worldwide to investigate
strategies to minimise epidemics. At the heart of this effort is free, open data
"These findings make a strong case for paid sick days," said Dr Kumar.
"Future research should examine the economic impacts of paid sick-day