My first job after leaving school was £5 a week for a 5 and a half day week, my parents generation used to do 6 days a week when they were younger. I ended up doing a 5 day week, until I went self employed and was back up to over 6 hours a week for a few years, but these days a 4 and a half day week with as few as 35 hours is not unusual. We started working from 15 or 16 back then, not 18 as I think has or will become the norm now and those extra years while younger for 20% or more hours a week probably even out for having to work a few more years, plus retiring in better health at a later age with a longer life expectancy, having worked in less physically hard or demanding jobs with better work conditions and pay so that you would be able to be financially more secure in your retirement also tends to compensate for the older retirement age. Don't forget that you can retire at any age you choose it is only the state pension age that has increased, and that is a pittance in comparison to other countries, so if you put some of your higher wages into a private pension or invest in rip off buy to let properties then you can retire earlier than most of my generation did with a good income. Sadly knowledge like this only comes with the wisdom of age so in the same way that I only learned this when I was too old to benefit from it then you are probably also a little too old to benefit from my knowledge and wisdom and any that you will eventually, with a bit of luck, gain yourself.
The option of zero hours jobs with a minimum hourly wage of £8.72 from April certainly beats having to take any job you were offered at the dole office, where they could make you take a job at 50p an hour or even less or you would lose your dole money, before the minimum wage came in and when there was no such thing as universal credit.
The poll tax was Maggie's best idea and it was a shame that they scrapped it. It was a very fair system as at the time my mother was paying the same under the old rates system when she was living alone after my dad died as her neighbours were paying where both the husband and wife worked and each of their 3 sons worked. Maybe the rate per person was set a little too high but the basic principle was right as the more people in the house then the more services that the money that the rates or poll tax provided they would use but the fewer the people the less they used, but now 2 people pay the same as several in the house in the same band. It is a ridiculous and complicated and expensive system to collect.