The rules that you have laid out are not exactly clear to me. Does one start earning vacation time from the first day of employment or does 1 year have to pass before the 1 & 2 year rate starts the earning of leave credits? If an employee had exactly 1 year of service and didn't take a single day off, does that employee have 5 days or 0 days as of the anniversary date?

Do you issue credits in advance and can credits be carried over to the next year? For example, does an employee with 2.5 years service (not having taken a day of leave) have 5, 7.5, 10, 12.5 or 15 days?