In a democratic republic as an example, the executive branch and the legislative branch of government should be overseeing the nation's finances. Basically legislation involving programs and the money to fund them originates in the legislative branch. If this activity becomes a law by an act of signing it by a president for example, then we have dual oversights.
Let this be an example as it can become more complicated. Traditionally within the executive branch there is a department of the Treasury. The cabinet head and the chief executive of the government should be overseeing the proper expenditures of the government.
Also, since the legislative branch originated the financial law, it should have an "over sight committee" to also insure the finances are being spent properly.
county treasurer
The treasurer is typically part of the executive branch of government. They are responsible for managing and overseeing the finances and accounting of the government or organization they serve.
overseeing the staging area
Treasure
Staging Sector Officer
government
EECOM
ataturk
Overseeing contractors and releasing payments.
The Under Secretary of Defense for Acquisition, Technology, and Logistics is responsible for developing SOH policies and Overseeing Components' SOH Programs.
The termination policy meant that state governments would become responsible for overseeing Native American reservation land.
Social Security Administration