COLUMBIA — The Missouri Supreme Court upheld Proposition A in a decision issued Tuesday.

Missouri voters passed Proposition A in November, which raises the minimum wage and requires paid sick leave. The law goes into effect May 1.

Prior to Election Day, the ballot measure gained support including over 135 Missouri-based organizations and more than 500 Missouri businesses.

The court's ruling focuses on Proposition A's summary statement and fiscal note, which appeared on the ballot. The court found that the summary statement and fiscal note were not misleading.

Chief Justice Mary Russell and five of the six judges wrote the opinion. Judge Robin Ransom wrote in a separate opinion that she did not believe the court had jurisdiction over post-election ballot title changes.

One advocate for Missouri workers said this ruling is a victory.

“The ruling today affirms the will of over 57% of Missouri voters who approved Proposition A in November," said Terrence Wise, a Stand Up KC and Missouri Workers Center leader. "Workers like me have spent over a decade fighting across race and place to strengthen our rights, and the Supreme Court decision today proves that when we fight, we win."

Others were not supportive of the ruling, including Missouri Chamber of Commerce and Industry President and CEO Kara Corches.

“We are deeply disappointed by the Missouri Supreme Court’s decision regarding Proposition A," Corches said in a news release. "While we respect the court’s authority, we believe today’s decision fails to address critical concerns regarding election irregularities and constitutional violations that occurred.

Single-subject requirement

The Missouri Constitution requires that ballot initiative contain a single subject.

Opponents argue that Proposition A imposes multiple, separate requirements on Missouri employers.

The Supreme Court said in its decision summary that it lacks jurisdiction over whether Proposition A violated the single-subject requirement.

Legislative opposition

Republican lawmakers have advanced efforts to remove some parts of Proposition A, which voters passed in the November general election.

House Bill 567 sits in the Missouri Senate and would remove the paid sick leave requirement from Proposition A. The bill made it through the House earlier this month.

Republicans have criticized the proposition, saying it asked voters to vote on two issues with one vote.

Senate Democrats have been filibustering to stop the bill from passing before the end of the legislative session. Proposition A goes into effect Thursday.

Sen. Brian Williams, D-St. Louis County, filibustered Tuesday morning before the Senate could begin floor discussion.

He read the Senate journal for hours before the state Supreme Court issued its decision.

Williams said he was frustrated with Republicans' attempt to take away paid sick time.

Rep. Eric Woods, D-Kansas City, said the ruling backs up the way Missourians voted.

“I think it’s great. I think it was an obvious decision," Woods said. "And I think it further affirms that this was the will of the voters.”

The Supreme Court ruling does not ensure protection of paid sick time. HB 567 could still take this away if the bill passes.

The legislative session ends May 17.