ILR application, justification for holidays

I am confused about whether I need to provide an employer's letter to explain my holiday absences during the last 5 years. I think I don't need to provide anything, just the passport stamps should suffice, unless I was out of the country for more than 180 days in a year (which is not my case).

Do I need to reach out to previous and current employers for letters saying I was on holiday when I left the country in the last 5 years?