As the boss, it also gives me a paper trail if I find out later you did go fishing on that day. What time it came in, how often a person texts in sick or late.
It has helped me in one unemployment case where the filing employee was claiming he gave enough notice and was told "come in or don't bother coming back". I copied all tests to email then to a word document, and had it available for unemployment hearing. He tried to deny it, but the time stamp of the texts, and him not having any texts of me saying anything like "come today or don't bother coming back", as well as copies of schedules of when he was supposed to work, pretty much made it easy for the person making the decision to decide he was full of it and realize he quit the job and wasn't fired unjustly as he was claiming.