The World Health Organization estimates that 235 million people around the world suffer from asthma.
The study, published in the Journal of Asthma and Allergy, showed that asthma sufferers are missing nearly one-tenth of work hours due to their symptoms, which also results in a loss of productivity and affects their emotional well being.
On an average, three out of four workers could not work to their full potential, showed the survey of over 1,500 symptomatic asthma patients across six countries Brazil, Canada, Germany, Japan, Spain and the UK.
Overall, total work productivity dropped by one third (36 per cent) due to asthma.
"But, what struck us most was the emotional response to asthma in the workplace," said Kevin Gruffydd-Jones from Box Surgery in Britain.
The study results found that on an average, up to one-tenth (9.3 per cent) of work hours were missed in a single week because of workers' asthma symptoms.
Asthma sufferers in India too face similar challenges, according to doctors.
"One cannot ignore the environment and other related conditions which in any case can go against the patient; she/he has to be prepared all the time with medications, inhalers and other prescriptions," said Navneet Sood, Senior Consultant, Pulmonology, Dharmshila Narayana Superspeciality Hospital in Delhi.
"Strong will power is needed to continue with normal daily life as being careless is not an option," Sood told .
Asthma patients often feel inferior and disadvantaged compared to their non-symptomatic colleagues.
"Being an asthma patient one is prone to minor or major attacks. A large number of patients have to be on daily treatment to keep symptoms under control," Gyandeep Mangal, Senior Consultant in Respiratory Medicine at Sri Balaji Action Medical Institute in Delhi, told .
"The disease affects the daily life of an individual where she/he has to take a number of precautions for their well being along with medications and and at the same time have to continue with their jobs, home tasks and other work," he added.
( With inputs from IANS )