Do they have the right by law to transfer an employee to 2/3 rates if...

According to Article 42 of the Labor Code of Ukraine, when the number or staff of employees is reduced due to changes in the organization of production and work, employees with higher qualifications and labor productivity are given preferential right to stay at work.

Under equal conditions of labor productivity and qualification, preference in remaining at work is given to employees who have less than three years left until the retirement age, upon reaching which a person has the right to receive pension benefits.