Douglas C. Pizac / AP Utah employee Glenn Barrow says his new hours might interfere with his part-time job as Hooper City mayor.

SALT LAKE CITY — Starting next month, it will be "TGIT" for Utah state employees. As in: "Thank God It's Thursday."

In a yearlong experiment aimed at reducing the state's energy costs and commuters' gasoline expenses, Utah is about to become the first state to switch to a four-day workweek for thousands of government employees.

They will put in 10-hour days, Monday through Thursday, and have Fridays off, freeing them to golf, shop, spend time with the kids or do anything else that strikes their fancy. They will get paid the same as before.

"One of the jokes is that one of the biggest benefits will be for golf courses," said Ryan Walker, 49, an information technology director. He said he is looking forward to tackling items on his long-neglected "honey-do" list, camping, and traveling more.

The order by Republican Gov. Jon Huntsman will affect about 17,000 out of 24,000 executive-branch employees. It will not cover state police officers, prison guards or employees of the courts or Utah's public universities. Also, state-run liquor stores will stay open on Fridays.

The compressed workweek in Utah could prove inconvenient to those who need to use state services and find certain offices closed on Fridays. Also, some parents may have to rearrange child care to accommodate their longer hours, and bus and commuter train schedules might have to be adjusted.

But many are excited about the idea.

"I'm thrilled," said Rose Kenworthy, 58, an executive secretary at the Utah Department of Environmental Quality. "Now I can do anything I want. I can have lunch with my friends, spend time with my grandchildren or just chill out."

Turning off the lights, the heat and the air conditioning on Fridays in 1,000 of 3,000 government buildings will save about $3 million a year out of a state budget of $11 billion, according to the governor's spokeswoman, Lisa Roskelley. The state will also save on gasoline used by official vehicles, but authorities have not figured out how much.

The Department of Environmental Quality estimated employees in six buildings alone will save themselves more than $300,000 spent on gas to commute to work.

In addition, the governor said the new schedule could help recruit younger workers who prefer a three-day weekend.