I work for a large charitable trust, where I am line managed by a senior manager who tweets excessively during working hours. In a typical 9am - 5pm day, if she has no meetings, she will manage 110 - 140 tweets. Not just a word or two, but a couple of lengthy sentences at a time. Often the content is inappropriate and even indecent. It never relates to work.
As a result, she is not productive or supportive of her team. Our workload is building as she adds to it with hers. We fear that sooner or later projects will begin to fail. Apart from this, it is galling to see her getting away with it (and laughing about getting away with it with her twitter "followers"). Whilst we are paid a fraction of her wage and are under enormous pressure to meet team targets. I feel that turning a blind eye makes me negligent.
BTW, I look at her tweets a couple of times a week, when I'm home in the evening. Not at work!
What should I do?
a) shut up and get on with my own work (and try to forget I'm doing a lot of hers too)
b) anonymously post print outs of her activity to the human resources department
c) go and speak directly with the chief executive