This is a summary of recent congressional actions not reported elsewhere in The Post. BOTH HOUSES Health Research

House and Senate negotiators agreed on a compromise version of legislation reauthorizing two of the 11 units of the National Institutes of Health and establishing new research programs for arthritis and nursing. The conferees agreed to a Senate version of the bill that would reauthorize the National Cancer Institute and the National Heart, Lung and Blood Institute for three years, and also establish a new arthritis institute. The House had approved a one-year extension of the institutes. The conferees compromised on the nursing institute proposed by the House by creating a research program on nursing, without the status of an institute. (HR2409, Oct. 10) Energy and Water

A House-Senate conference committee reached agreement on a fiscal 1986 spending bill for energy and water development. The $15 billion measure includes $113 million for the Tennessee Valley Authority and $120 million for the Appalachian Regional Commission, the funding levels that the House had approved. The Senate had requested about $91 million for the TVA and $81 million for the ARC. The bill is expected to come to the floor on both chambers this week. (HR2959, Oct.9) Municipal Workers

By unanimous votes, the Senate Labor and Human Resources Committee and a House Education and Labor subcommittee approved legislation designed to blunt a Supreme Court decision on overtime pay for municipal workers. The measures would permit local governments to give their employes compensatory time, in lieu of cash, for working more than 40 hours a week. A February Supreme Court decision required the governments to pay their employes for overtime, and many said the ruling would break their budgets. The bills would permit employers to offer 1 1/2 hours of "comp" time for each overtime hour worked. The decision had made the governments liable for overtime back to April 15, but the legislation would end that liability. (S1570, Oct. 9; HR3530, Oct. 10) HOUSE Hostage Benefits

A Foreign Affairs subcommittee, by voice vote, approved legislation to compensate civilian government employes taken hostage by terrorists, and also to compensate their families. It would allow agency heads to put the salaries of captive employes in interest-bearing accounts, and pay them the government's per diem allowance for their time in captivity. The bill would compensate the civilian government employes who were taken hostage by the Iranians in 1979 by paying each of them about $29,000. (HR2851, Oct. 8) Superfund

The Judiciary Committee, by voice vote, approved provisions of the Superfund reauthorization bill dealing with legal issues. The panel voted to allow interested parties to seek court review of the cleanup process that the Environmental Protection Agency has selected for a specific toxic waste site. In another amendment, the committee agreed to allow citizens to sue to force a cleanup if the hazardous waste site poses a health or safety threat. The bill, which would provide $10 billion for Superfund, must be approved by several other House committees, including Ways and Means. The Senate has already approved a $7.5 billion Superfund bill. (HR2817, Oct.8) Poll Closing

By a vote of 7-to-1, a House Administration subcommittee approved legislation that would require polling places around the country to close at the same time for presidential elections. The measure calls for polls to close at 9 p.m. in the Eastern time zone, 8 p.m. in the Central time zone, 7 p.m. in the Mountain time zone and 7 p.m. in the Pacific time zone. (HR3525, Oct. 10)