ans
2 yes, she is covered by workers comp as she was performing her work or
she was working at tht time.

3 depends on the life of the tyres defined ,if the life is less than 12 months
it will be expensed and if life is more than 12 mths it will be depriciated.

4 if ur company allow meal allowances then u should pay him otherwise not and the group certificate of an employee tells wether they r eliglble for meal allowances.

sorry i can help u with these only