jxbr wrote:
Normally your salary goes up because:
1. You get pay increases
2. You get promoted
Public service salaries go up because:
1. You get pay increases
2. You get promoted
3. You stay in the same role and get additional increases automatically without reference to ability and without assessment
The issue is not that increments exist and are awarded. It is that they are awarded automatically to all without evaluation/assessment/justification.
I think that's a little simplistic.
In the private sector I get salary increases for:
1. Performance
2. Progression through a salary band (experience)
3. Promotion
4. Market assessment (every few years, everybody gets something, ostensibly because we've been measured against the job market for our skills, but in reality because attrition has increased)
5. Handing in my resignation - can't use this too often

In the public sector this is:
1. Increments / Progression through a grade ... universal
2. Promotion
3. Market assessment (benchmarking and adjustments for inflation) ... universal
In fact, I see the public sector as missing one of my opportunities. I can get an extra bit of salary over my colleagues on the same level if I work hard.
All that happens in the public sector is that the pot is shaken up and distributed to everyone equally in the form of increments. Now, I agree benchmarking should be re-evaluated, and we've gone a way towards that with the 11% pay cut, but that is off the base-salary and the increments scale.
I think it's grossly unfair to paint increments, in this context, as some sort of unwarranted pay-rise without productivity. They are outside of the process completely. Having a salary scale (as defined by increments) is the only union-friendly argument-free way of rewarding experience over time in the public sector. Attack the base rate by all means, but hyping the increments is unfair in my opinion.