• Industrial unrest in the 1920s and 1970s mean the highest number of
working days were lost in these two decades.
Since the 1970s there has been a dramatic fall in the number of days lost,
figures from the Office for National Statistics show.
Sign up to our weekly round-up of HR news and guidance
Receive the Personnel Today Direct e-newsletter every Wednesday
At the same time union membership has also fallen, although this is expected
to change as new rights on union recognition come into force.
