8. A wage earner must present his labor booklet upon the request: (_a_) Of the managers of the enterprise, establishment or institution where he is employed; (_b_) Of the Department of Labor Distribution; (_c_) Of the trade union; (_d_) Of the officials of workmen’s control and of labor protection; (_e_) Of the insurance offices or institutions acting as such. APPENDIX TO SECTION 5 RULES FOR THE DETERMINATION OF DISABILITY FOR WORK 1. Disability for work shall be determined by an examination of the applicant by the Bureau of Medical Experts, in urban districts, or by the provincial insurance offices, accident insurance offices or institutions acting as such. _Note._ In case it be impossible to organize a Bureau of Medical Experts at any insurance office, such a bureau may be organized at the Medical Sanitary Department of the local Soviet, provided, however, that the said bureau shall be guided in its actions by the general rules and instructions for insurance offices. 2. The staff of the Bureau of Experts shall include: (_a_) Not less than three specialists in surgery; (_b_) Representatives of the Board of Directors of the office; (_c_) Sanitary mechanical engineers appointed by the Board of the office; (_d_) Representatives of the trade unions. _Note._ The specialists in surgery on the staff of the bureau shall be recommended by the medical sanitary department, with the consent of the Board of Directors, preferably from among the surgeons connected with the hospital funds, and shall be confirmed by a delegates’ meeting of the office. 3. During the examination of a person at the Bureau of the Medical Commission, all persons who have applied for the examination may be present. 4. An application for the determination of the loss of working ability may be made by any person or institution. 5. Applications for examination shall be made to the insurance office nearest to the residence of the person in question. 6. Examinations shall take place in a special room of the insurance office. _Note_. If the person to be examined cannot be brought to the insurance office, owing to his condition, the examination may take place at his residence. 7. Every person who is to be examined at the Bureau of Medical Experts shall be informed by the respective insurance office of the day and hour set for the examination and of the location of the section of the Bureau of Medical Experts where the same is to take place. 8. The Bureau of Medical Experts may use all methods approved by medical science for determining disability for work. 9. The Bureau of Medical Experts shall keep detailed minutes of the conference meetings, and the record embodying the results of the examinations shall be signed by all members of the bureau.