The next round of strikes by fast-food workers demanding higher wages is scheduled for Thursday, and this time labor organizers plan to increase the pressure by staging widespread civil disobedience and having thousands of home-care workers join the protests.

The organizers say fast-food workers — who are seeking a $15 hourly wage — will go on strike at restaurants in more than 100 cities and engage in sit-ins in more than a dozen cities.

But by having home-care workers join, workers and union leaders hope to expand their campaign into a broader movement.

“On Thursday, we are prepared to take arrests to show our commitment to the growing fight for $15,” said Terrence Wise, a Burger King employee in Kansas City, Mo., and a member of the fast-food workers’ national organizing committee. At a convention that was held outside Chicago in July, 1,300 fast-food workers unanimously approved a resolution calling for civil disobedience as a way to step up pressure on the fast-food chains.