The procedure for termination of employment initiated by the employee (by choice) is governed by Article 80 of the Labor Code.
The employee has the right to terminate the employment contract, notice to the employer in writing two weeks. The written form of notice of resignation is required. Oral statement by the employee to terminate the employment contract can not constitute grounds for the publication of the employer the appropriate order of dismissal.
The duty to warn an employee of the employer to terminate the employment contract at his own request two weeks (and head of the organization - for one month) does not mean that an employee can not do it for a longer period. Two weeks should be viewed as the minimum period for which the employee is required to notify the employer of intention to terminate the employment relationship.
By agreement between the employer and employee an employment contract may be terminated before the expiry of notice. But if the employer has not given consent to the termination of the employment contract before the expiry of notice, the employee must work out the due date. Early termination of work in this case is a violation of labor discipline.