The timeout period for online employment applications is typically 30 minutes. The average time for a person a to complete an online application is usually longer than 30 minutes.
It would be helpful if the application software would prompt at the applicant how much time before prompted with a timeout. The timeout notifications which I have found works best is screen dimming, contrast change, and/or audible beep sound with the alert window centered on the screen.
Too often the alert window is centered on the webpage which can put the window outside the current viewable range and if there is no other indication of timeout it is difficult to determine why your application is suddenly non-responsive.
In general the online application process is user intensive and can be prevent PWD applicants from applying.