the tipping point

do you know what is a tipping point?
if you don't know, here you will know


the tipping point at which a series of small changes or incidents becomes significant enough to cause a larger, more important change and 
time during an activity or process when an important decision has to be made or when a situation changes completely:

a tipping point in sth Many developed countries are getting close to a tipping point in their attitude to the environment.

be at a tipping point Employers could find themselves at a tipping point, where so few employees participate in their health-care plans it threatens their ability to obtain group coverage.

reach/approach/near a tipping point Employee anger over pay violations in the restaurant industry may have reached a tipping point.