Work Supervisor Dismissal from Work

Respected Sir's, We have terminated Work Supervisor in 2016 on the grounds of un-ethical practice and other mis-conducts activity. The decision was on the spot without giving notice period as it was observed by us personally for 2 month period. As per Offer Letter, we have made it clear that if involved in un-ethical practice, immediate serious action shall be taken. Also their is a 3 months notice period for either party. However in this termination we have made it clear that no settlement shall be amde due to gross mis-conduct and un-ethical practice. Few reasons for terminating as follows: 1. Demanding Bribe/Commission from labors and staff members who work directly for our company - Evidence available 2. On few occasions Supervisor accepted Bribe and labors/staff members have submitted written statement - Evidence Available 4. Not achieving monthly target by not engaging right workers for the work 5. Increased OT to labors without reason/work whereby labors get more money to pay commission 6. Continuous mis-behaving with all of staff members and EGOism 7. Disturbing work by not allowing other staff members to utilize idle labors for the useful work 8. Making labors to sit idle and still instructing supervisors to given them attendance without performing any work 9. Alcohol addicted during work hours and unplanned absence Based on above is this suffice to terminate without settlement. Any consequences? Ex-Employee has filed a case on illegal termination in the Civil Court for recovery and also complained to Labor Department. Please advice. We are considering to take legal action based on available evidence with us. Thx for the advice. Ajay Chowhan