EN
The article is dedicated to the issue of countersigning of some legal proceedings by the treasurer of a local self-government unit. Since municipalities are a frequent participant in civil-law proceedings, the issue is very important from both theoretical and practical perspective. The author pays particular attention to the significance of countersignature as for the validity and effectiveness of legal proceedings, he also discusses issues related to conclusion of agreements. This is justified by the scale and importance of bilateral proceedings. However, many issues related to conclusion of agreements can be applied in the field of all legal proceedings, including unilateral.