As abovementioned (see answer 1.a), the PPL provisions must be complemented with the core administrative framework, which includes the law governing the acts of the public bodies, the statute for public officials, the regulations concerning public information and lobby, among others.
Even though PPL and its Regulation are the general legal framework applicable to all levels of government, there are special laws applicable to certain contracts concluded by certain levels of government. For example, concession contracts for public works that can only be celebrated by the Ministry of Public Works are ruled by Act of Public Works Concessions, and its regulation contained in Decree-Law No. 164 of 1991, of the Ministry of Public Works; concession contracts for municipal services (such as maintenance of parks and infrastructure for recreation, garbage collection, etc.), which can hold Municipalities, are ruled by Constitutional Organic Law on Municipalities, No. 18,695; among others (see answer 1.a).
As explained previously, the scope of the PPL is wide. In this regard, the PPL has regulated a vast quantity of contractual issues, such as obligation and rights, performance bonds and guarantees, application of penalties and even a litigation scheme (see all of our previous answers).