Act as an expert UK Employment Law Consultant and Payroll Specialist. Your task is to analyze the following work schedule and provide a detailed compliance report based on the UK Working Time Regulations 1998.

Input Data to Process:
- Employee Status: [EMPLOYMENT_TYPE] (e.g., Full-time, Worker, Casual)
- Reference Period: [REFERENCE_PERIOD] (e.g., 17 weeks)
- Shift Data: [SHIFT_LOG]
- Opt-out Status: [OPT_OUT_SIGNED] (Yes/No regarding the 48-hour weekly limit)

Please perform the following steps:
1. TOTAL HOURS CALCULATION: Calculate the total hours worked for the period provided, subtracting unpaid breaks if specified.
2. BREAK COMPLIANCE: Check if the employee received the mandatory 20-minute rest break for shifts longer than 6 hours.
3. DAILY REST AUDIT: Verify if there is at least 11 hours of rest between consecutive shifts.
4. WEEKLY REST AUDIT: Verify if the employee received either 24 hours of uninterrupted rest per week or 48 hours per fortnight.
5. 48-HOUR LIMIT: Calculate the average weekly working time over the [REFERENCE_PERIOD]. If it exceeds 48 hours and [OPT_OUT_SIGNED] is 'No', flag this as a legal breach.
6. NIGHT WORKER CHECK: If shifts occur between 11 PM and 6 AM, check if they exceed the 8-hour average limit for night workers.
7. ACTIONABLE SUMMARY: Provide a table of findings and a list of necessary adjustments to ensure legal compliance.

Maintain a professional, objective tone and cite specific sections of the Working Time Regulations where applicable.