SAN FRANCISCO (KCBS) – The San Francisco Board of Supervisors has voted unanimously to put a minimum wage measure on the November ballot.

The measure that will be put before San Francisco voters would raise the minimum wage in the city to $15 an hour by July of 2018. It was back in June when San Francisco Mayor Ed Lee brought together supervisors, business and labor to jointly announce the compromise ballot measure.

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“The current minimum wage at $10.74, there has been an across the board agreement that that just doesn’t cut it, that’s not enough,” Mayor Lee said.

San Francisco Supervisor Jane Kim worked with the mayor on the ballot measure because of concerns that the income gap is widening between the lowest and highest paid workers in San Francisco.

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“In a time of economic prosperity, no one should be left behind,” Kim said. “Everyone that works to make the city and economy so successful should benefit from this prosperity.”

Under the proposal, the minimum wage would be raised to $12.25 next year and steadily increase until hitting the $15 an hour mark in 2018.

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If a majority of voters support the measure, the first increase would take effect on May 1, 2015.