TOPEKA, Kan. (AP) -- Kansas lawmakers are resuming work on proposals to reduce sales and income taxes even though they've already approved a package of aggressive tax cuts.

But it wasn't clear Monday when three House and three Senate negotiators would meet again to consider alternatives to the tax plan that cleared the Legislature last week. They announced a meeting, then canceled it.

Republican Gov. Sam Brownback has said he's willing to sign the plan already approved by lawmakers.

It cuts individual income tax rates, exempts 191,000 businesses from income taxes and reduces the sales tax to 5.7 percent in from its current 6.3 percent, starting in July 2013.

But Brownback also has encouraged lawmakers to keep working because many of them fear the tax plan they passed could create serious budget problems.