If you were around during the 70’s, 80’s and 90’s the only people HR were hiring were college kids, me included. Most were under 21 and Male, very seldom did they qualify Woman for their physically demanding entry positions.
The UPS Pension Plan was started in 1973, originally it did not guarantee vesting rights till you had 10 years in, that changed to the current level of 5. A lot of us started straight out of High School at 18 or 19 years of age. Basically the company designed the plan to prevent any promised benefits from happening, it was their piggy bank, or tax shelter. I remember back in 1993 that the UPS pension plan at that time was only paying out for 34 eligible retirees.
Meanwhile .. The UPS Retirement Plan for Management was shelling out over 10 x as much over it’s Union counterparts annually in their fund. Their formula is based on 1/2 their annual salaries...so if you retire after 25 years and have a base salary of 100,000 ..do the math. They were on easy street, the more you climbed the ladder the fatter the pension benefit.