I also use some pre-dawn light because I live so far north, our daylight will diminish until we only get 7 hours daylight and that is a generous description. I do chores at 6 am and I need light to see anyhow, so I have the timer set to turn on a little light, each day, year round, at 5 am. I do nothing in the late afternoon or evening. I don't want to push them too hard, but we do need our production birds laying at a reasonable rate in the fall and winter.
The use of light is a personal, management decision. How much or how long is also a personal decision. Normally, good laying breeds like a production red, or production strains of other breeds respond to a little more light. Some breeds simply will not lay well in the fall/winter and that is that. They really weren't bred for high production.