Continuing to push for higher wages for the state’s lowest-paid workers, Gov. Andrew M. Cuomo announced on Tuesday that all of the waiters, waitresses and others who work for tips in New York City will soon get a raise of their minimum wage to $7.50 an hour.

The increase was ordered by the acting labor commissioner, Mario J. Musolino, and will go into effect at the end of the year. It will consolidate three categories of tipped workers — whose minimum hourly wages range from $4.90 to $5.65 — into a single class to be paid at least $7.50 an hour.

The governor appeared with labor leaders at a union hall in Manhattan to celebrate Mr. Musolino’s decision and to repeat his own call for an increase in the statewide minimum wage for nontipped workers to $10.50 an hour. Mr. Cuomo also restated his view that the general minimum wage in the city should be even higher, $11.50 an hour, because of the higher cost of living.

The statewide minimum is scheduled to rise to $9, from $8.75, at the end of the year. But Mr. Cuomo said that increase, which translates to about $18,000 a year before taxes, was insufficient

A year ago, LeDaya Epps of Compton was unemployed and raising three children on her own, struggling to keep her car running to search for jobs.

On Tuesday night, she was sitting in the U.S. Capitol for the State of the Union address, a guest of First Lady Michelle Obama. Through the help of community organizations pushing for greater inclusion of African American workers, Epps has earned a good paycheck for more than six months helping to build the Crenshaw/LAX light-rail line.

Epps’ improving fortunes stem from an approach experts say could alleviate persistently high unemployment in the black community. An agreement involving government, organized labor and community organizations has required contractors to provide more opportunities for disadvantaged workers to get jobs on the rail project.

It’s an effort to create pipelines for black workers into higher-paying industries such as construction. Without such intervention, success often comes down to connections rather than qualifications, saidLola Smallwood Cuevas, director of the Los Angeles Black Worker Center, an affiliate of the UCLA Labor Center.

“It’s a question of the social networks around the work,” said Cuevas, whose organization helped Epps find work. “How do you crack what has historically been a difficult industry for women, and for black workers in particular?”

McDonald’s and its franchisees illegally retaliated against employees for participating in union-related activities, the National Labor Relations Board’s top lawyer alleged Friday in a case with sweeping industry implications.

NLRB general counsel Richard Griffin announced Friday he will issue 13 complaints involving 78 charges against franchises and McDonald’s USA, LLC.

Though many of these alleged labor violations were committed by independent franchise owners, Griffin ruled earlier this year that McDonald’s can be held liable for those actions as a so-called joint employer, leaving the corporatrion — and potentially other franchisors — exposed to such claims.

McDonald’s said the decision will “strike at the heart of the franchise system.”

“McDonald’s is disappointed with the board’s decision to overreach and move forward with these charges,” the company said in a statement.

“These allegations are driven in large part by a two-year, union-financed campaign that has targeted the McDonald’s brand and impacted McDonald’s restaurants,” it added.

McDonald’s argued it shouldn’t be held responsible for labor decisions made by independent franchise operators, but labor groups accused the popular fast food chain of “inventing a make-believe world in which responsibility for wages and working conditions falls squarely on the shoulder of franchisees.”