Final answer:
The original question asks for Arrah's hourly rate, however, the provided information is insufficient to determine the rate as it does not mention the specific wage. Instead, it details the policies around overtime pay and grace periods.
Step-by-step explanation:
The question asks about Arrah's hourly rate but does not provide the necessary information to calculate it. To determine an hourly rate, specific information such as the amount paid for a given period or the actual rate of pay must be provided.
However, the question does mention various policies about overtime pay, breaks, and grace periods which are relevant to understanding compensation and workplace standards.
For instance, an overtime premium of 30% is mentioned for regular overtime, 50% for Saturday work, and double for Sundays and holidays.
These details can be important for Arrah in calculating her total earnings based on her hourly rate, assuming she works overtime or on designated premium paydays.