OKLAHOMA CITY -- Republican Lt. Gov. Mary Fallin's attempt to preside over the Senate was blocked Monday by a parliamentary move of the Senate's Democratic leader.

Fallin and Republicans are trying to force a vote on a Republican-backed bill to reform workers' compensation laws.

After Monday's effort by Fallin to preside over the Senate, Senate President Pro Tempore Mike Morgan, D-Stillwater, made an adjournment motion from the floor after noting no bills were on the agenda.

A voice vote followed between Democrats and Republicans and Morgan declared that "the ayes have it. The Senate shall stand adjourned until 1:30 tomorrow."

Fallin said later she was disappointed that only Morgan and the majority leader's microphones were turned on and that she was not allowed to perform her constitutional right to preside. Democrats have called Fallin's presence in the Senate a "political stunt" and have said workers' comp reform should be worked out in a House-Senate conference committee.

Shortly before 3 p.m., Morgan issued a press release saying that he had reaffirmed control of the Senate. Morgan cited several sections of the Oklahoma Constitution regarding the role of the lieutenant governor and said attorneys assured him that he has the power to take control of Senate business.

Fallin did not immediately respond to Morgan's comments.

Democrats hold a 26-22 majority in the Senate. Twenty-five members must be present in order to conduct business.

Senate spokeswoman Malia Bennett confirmed that senators would meet at 1:30 p.m. Tuesday. She said no bills are on the agenda and that most Senate work would be done in conference committees.