When I was naïve teenager about money in early 1960’s. I worked for a grocery store chain that was using two sets of payroll books, they got their managers of each store, 23 in total. To tell their staff of 3 or 4 that they had forgot to sign the wage book or it had been misplaced and it need to be signed for tax man or union that where coming next day or so and this was on regular basis too! Once I even paid back money that I thought that I had been overpaid!

Yes, they did get caught not long after that. All the managers lost all their holiday pay, as he wouldn’t let anyone take holidays for years too!
So after that job, I always kept my pay slips and check each one too! Then I bundle them up by the month into each financial year lots.
For the last 30 years, I also kept a wage log notebook. Noting the date of each pay; gross pay, tax paid, after tax amount, plus any deductions with column for each one, then amount of my net pay. In the last column I would put notes for that pay period. These would be overtime hours, sick leave hours, RDO, LSL, holidays, worker compensation adding in their amount also! Any operation that I had and noting if it was at no pay. Doing this gave me a lot information over the years, that when I needed it, later in my life for filling in forms for the pension or my medical history etc.
One extra bonus was when I did the lifetime income test in “Your Money or Your Life” by Joe Dominguez and Vicki Robin. I had all this information, as these notebooks are A6 size and they don’t take up much space! :