The Montgomery County, Maryland council voted unanimously to pass a paid sick leave bill on Tuesday, making the town the 23rd place in the country to enact such a requirement.

The law is one of the most robust to be passed at the city or state level so far. “The Montgomery County paid sick days laws is one of the strongest yet, and it should serve as a model for the state of Maryland and the nation,” said Charly Carter, director of Maryland Working Families.

Once it goes into effect in October 2016, around 90,000 people will get the right to a day off when they get sick that they currently don’t have. Employees at businesses with five or more workers will be able to earn up to seven days off a year, while those at companies with fewer workers can earn four paid days and three unpaid. Many current laws in other places exempt smaller businesses completely. Amendments to exempt people under the age of 18, people who work fewer than 16 hours a week, and smaller employers all failed.

Montgomery County’s leave can also be used for a wide variety of purposes beyond taking a day off for a worker’s own illness: to care for a sick family member, to deal with a public health emergency, or to deal with domestic violence, sexual assault, or stalking.

A statewide bill in Maryland has been introduced but not yet passed, although it will be re-introduced next session, according to Working Matters, the group organizing support for paid sick leave in the state. While the country still doesn’t have a national requirement that employers offer their workers paid sick leave, unlike all other developed nations, many local governments have taken action on their own. With Montgomery County, four states and 19 cities have passed laws.

CREDIT: Andrew Breiner, ThinkProgress

Without a federal law, however, about 40 percent of America workers don’t have the ability to take paid time off when they or their family members get sick, the majority of them low-income workers who may not be able to afford an unpaid day. President Obama has called to change that, and Democratic lawmakers have introduced bills that would require all of the country’s to offer sick leave, but they haven’t moved forward.

While businesses often claim that they can’t afford to offer paid sick leave, the evidence from many of the places that have passed requirements is that the laws don’t represent an economic burden. In Connecticut, Jersey City, and Washington, D.C., employers don’t report that the laws have been costly or difficult to comply with, while some have seen benefits like decreased turnover and increased productivity. Meanwhile, job growth in Connecticut, San Francisco, and Seattle has been stronger after their laws took effect, and a majority of employers in many of these places now support the laws.

But the opposition has gained ground in other places. Ten states have passed laws that ban cities and counties from passing their own paid sick leave laws, and others are considering the same move.

This blog was originally posted on Think Progress on June 24, 2015. Reprinted with permission.

About the Author: The author’s name is Bryce Covert. Bryce Covert is the Economic Policy Editor for ThinkProgress. She was previously editor of the Roosevelt Institute’s Next New Deal blog and a senior communications officer. She is also a contributor for The Nation and was previously a contributor for ForbesWoman. Her writing has appeared on The New York Times, The New York Daily News, The Nation, The Atlantic, The American Prospect, and others. She is also a board member of WAM!NYC, the New York Chapter of Women, Action & the Media.