2. If the monthly salary is 3,000 yuan, you can divide it by 30 days, which is equivalent to 100 yuan.
Then you can deduct him 100 yuan if he takes a day off.
4. If there is extra full attendance, it needs to be deducted.
Asking for leave refers to not working, not studying or having special things for a certain period of time due to illness or something. From Liu Yiqing's Shi Shuo Xin Yu Pai Diao in the Southern Song Dynasty.
References:
Baidu encyclopedia-ask for leave