Comment 1 for bug 1089862

with the program RSIBreak it already works:
http://packages.ubuntu.com/search?keywords=rsibreak

you can set a program, that starts, when a microbreak starts, and another, when a micro-break ends.

if you disable the "skip" button, then the only solution for you to continue working is to postpone the break, which does not trigger the event, that only fires, if the microbreak ends.