I love this site <a href=" http://www.lfa.com.au/sheer-alpha-review.pdf#wailing ">sheer alpha</a> Dave Prentis, general secretary of the Unison union, said: "The vast majority of workers are only on these contracts because they have no choice. They may give flexibility to a few, but the balance of power favours the employers and makes it hard for workers to complain."