To catch you up on recent events, the CPP switched from pay as you go to a funded reserve approach in the 1990's.
en.wikipedia.org
The Canada Pension Plan is, and has always been, a collective fund, rather than a collection of individual plans, (where one's future benefits would be directly linked to one's total contributions, plus investment income, paid as a life annuity). The method by which CPP is funded is not relevant in my post. The simplified model of the pyramid base paying benefits for the pyramid peak has essentially remained unchanged. This is true for every defined benefit plan.
Defined benefit plans have funding problems in the following situations:
a) The number of recipients increases, but the number of contributors decreases, (this is true in Canada, because of the size of the Baby Boomer generation, as compared to the generations which followed it).
b) Life expectancy increases, (benefits entitlements are paid for a longer period than anticipated).
c) Investment earnings of the fund as less than the actuarial projection.
d) Disability pension rates increase, (members begin to receive benefits at an earlier age than expected).
e) Ad hoc increases are higher than as projected, (eg: a cost of living increase based on above-average inflation).
f) An increase in the average age of contributing members.
All of these were contributing factors in the Teamsters plan I worked on, and the end result was a reduction to all pension benefits, both present and future.
In any Unionized business, Seniority within the Company or Union is a major factor, affecting wages, choice of jobs, overtime hours, and job security.
Most of the time, the employees with the most seniority are also the oldest. This means that if the company wants to reduce Unionized staff, through layoff or attrition, the young go and the old stay. The Teamsters do physical labour, and older workers with a lot of mileage on their bodies can't do as much as a young buck, they get injured on the job more often, and they take longer to recover from injury.
If the average age at retirement was, say, 62 years, and the average age of the employees was 35, there would be 27 years between when pension contributions were made, and when the benefit entitlements were paid out. If the average age of employees increased to 48.5, the deferral period would be halved, so contribution monies would have half as long to increase in value before having to be paid out.
When a company went out of business or ceased to participate in the Union Plan, There would suddenly be a large number of unanticipated immediate retirements for members who had been expected to work and contribute for additional years. There were also many members with high seniority who could only do 'light duty' jobs, (like manning the check-in gate), who met the definition of 'disabled' if their employer ceased to participate.
With the Teamsters, large Plan improvements were tied to the 1988 Collective Bargaining Agreement, and one of the larger employers ceased to participate at the end of the previous agreement, something not anticipated by the actuary. In addition, the investment managers had below average returns around that time. This led to a funding crisis which required large increases to the monthly contribution rate per member, which in turn led to other employers ceasing to participate. The end result was a 28% reduction to all current and future benefits, imposed by the Office of the Superintendent of Financial Institution ten years later, (the OSFI is the governing body for pension plans registered Federally, rather than Provincially).
btw, if anyone reading this starts a Unionized job where there is some possibility of layoff, my advice would be to learn the Collective Bargaining Agreement in full, then attempt to become Shop Steward as quickly as possible. Chances are, the current Steward is some old fuck who would be more than happy to relinquish that duty. In the event of layoffs, the Shop Steward is, (at least in the Teamsters), considered to be #2 on the Seniority list, regardless of their actual seniority within the company or Union.