evidence provided by the parties and according to procedures provided for by national law and practice.
3. In cases of termination stated to be for reasons based on the operational requirements of the undertaking, establishment or service, the bodies referred to in Article 8 of this Convention shall be empowered to determine whether the termination was indeed for these reasons, but the extent to which they shall also be empowered to decide whether these reasons are sufficient to justify that termi- nation shall be determined by the methods of implementation referred to in Article 1 of this Convention.
Article 10
If the bodies referred to in Article 8 of this Convention find that termination is unjustified and if they are not empowered or do not find it practicable, in accordance with national law and practice, to declare the termination invalid and/or order or propose reinstatement of the worker, they shall be empowered to order payment of adequate compensation or such other relief as may be deemed appropriate.
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DIVISION D. PERIOD OF NOTICE
Article 11
A worker whose employment is to be terminated shall be entitled to a reasonable period of notice or compensation in lieu thereof, unless he is guilty of serious misconduct, that is, misconduct of such a nature that it would be unreasonable to require the employer to continue his employment during the notice period.
DIVISION E. SEVERANCE ALLOWANCE AND OTHER INCOME PROTECTION
Article 12
1. A worker whose employment has been terminated shall be entitled, in accordance with national law and practice, to-
(a) a severance allowance or other separation benefits, the amount of which shall be based inter alia on length of service and the level of wages, and paid directly by the employer or by a fund constituted by employers' contributions;
or
(b) benefits from unemployment insurance or assistance or other forms of social security, such as old-age or invalidity benefits, under the normal conditions to which such benefits are subject; or
(c) a combination of such allowance and benefits.
2. A worker who does not fulfil the qualifying conditions for unemployment insurance or assistance under a scheme of general scope need not be paid any allowance or benefit referred to in paragraph 1, subparagraph (a), of this Article solely because he is not receiving an unemployment benefit under paragraph 1. subparagraph (b).
3. Provision may be made by the methods of implementation referred to in Article 1 of this Convention for loss of entitlement to the allowance or benefits referred to in paragraph 1, subparagraph (a), of this Article in the event of termination for serious misconduct.