My understanding is that final salary occupational pensions (the type that were 'contracted out') usually increase in line with inflation, but there is no triple lock. The Teachers' pension is linked to the CPI (Consumer Price Index) and rose by 3.1% last year, for instance. That seems uncomplicated, but I may very well be missing something significant
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Unfortunately (but understandably), most pensions are significantly lower than most salaries, so the increases are also lower (ie 3.1% of a small amount is an even smaller amount) so whilst rises may seem comparable with wage rises, they make a much less significant difference to the lifestyle of the pensioner.
Similarly, talk of the 'unfairness' of state pensioners getting larger than average percentage increases is based on weaselly expressions of the calculations IMO - it would mean more if they were expressed in real terms - ie 'state pensions will rise by £X' a week. Occupational pension calculations and increases will vary, and depend on the terms and conditions illustrated at the start, so whereas increases may be small, they will be in line with what people signed up to and the rate of their contributions.