Delay in departmental query

Employer neither reviewed the suspension nor issued show cause notice in 30 days/3 months. Employee under suspension for 15 years. Criminal case convicted lower Court. On my appeal High Court Issue bail. Getting subsistence allowance of Rs. 10,000. Can employer take ground of appeal pendency for not initiating departmental proceedings. Appeal disposal by High Court may take 10-20 years by the time retirement will come. Where to approach for my reinstatement as employer prepared for reinstatement only subject to final decision on the appeal. Kindly Clarify. Thanks in advance.