Prime Minister Dmitry Medvedev has more than doubled the number of state companies that have to report their employees' income and expenditures.
However, the declarations are unlikely to be made public.
The list, which has grown from 29 to 63 companies, now includes all large fuel and energy, transport and defense enterprises under state ownership and obliges their heads, deputies and senior accountants to report their own incomes and expenditures as well as those of their spouses and underage children.
The full list has been posted on the government's legal information website and includes the two natural resource giants Gazprom and Rosneft.
Although the measure is meant to increase transparency and give insight into civil servants' spending patterns, the declarations will not be made public, Kommersant reported Thursday without citing a source.
Employees' reports will be checked on the basis of "relevant information" from law enforcement, state or municipal agencies, as well as information from party leaders, the Public Chamber, mass media, or the government's personnel department itself, Kommersant said.
Medvedev issued the initial list of 29 companies, which included only one large enterprise — Russian Railways — in July.