Management are still at it. Messing reserve staff around, routinely destroying what little 'work-life balance' you have.
Tubeworker has long campaigned [1] for a better deal for reserves, with some success [2]. What is essential is that:
(a) reserve staff know their rights, so they can refuse abuses by management;
(b) the unions demand both more rostered jobs, and better rights for reserves; and
(c) union reps represent individuals effectively, but also take this up as a collective issue - you can bet that where one reserve is being treated badly, so are plenty of others.
Links:
[1] http://www.workersliberty.org/node/1605
[2] http://www.workersliberty.org/node/3310