A daily log was very helpful to my wife and I several years ago. I got the grounds maintenance contract at a condo where we had the tree contract. I was asked to submit a bid by the resident manager, after his brother-in-law abruptly left to take a job in Los Angeles working for his uncle. After six months, he moves back to Hawaii and tells the resident manager [his bro-in-law] he wants the maintenance job back. The resident manager tells my wife that he wants his bro-in-law to take over. I tell the RM no way. He then starts to find all kinds of fault with our work and complains to the property manager [his boss]. We have a big meeting, my wife, the RM, the PM and me. The RM tells the PM all the stuff we are supposed to do and haven't been doing. My wife then brings out a very detailed log book listing every single thing she did on each of the 3 days a week she went there. [I did not even know she keep a log.] The PM tells us, "You guys are doing a lot of extra stuff not on the list." We come out of the meeting with a $200 per month increase in pay. [This was a meeting to get us fired.] The RM was fuming. He then started to sabotage the grounds by turning off the sprinklers and trying to kill some of the plants.
We are still there after 11 years. The RM? He got fired about 7 years ago when he finally gave the PM an ultimatum. He told him either we go or he goes.
Yes, keeping a daily log can be very helpful. My wife no longer does the grounds, I do. Do I keep a log? No.