Fair Wages for Gas station workers in Ohio

As some know, I own some gas stations in Ohio and Indianapolis.I have been thinking of redoing my wages for some of my workers because I feel like we are paying our Employees too less and our Managers too much. We had a 93 percent turnover rate in employees last year and only had 2 managers voluntarily leave us last year. Just want to get your thoughts on livable wages to where it does not kill our company as well. To get a safe but cheap 1 bedroom apartment around this area will cost about 560 dollars monthly. There are also busses so a lot of our workers do not have a need for a car. Note that a lot of the stations that I own are in rough areas and we have bullet proof glass that we slide on during the night shift for the registers.

Current wages( For employee)

Start wage with no experience - $9.00 Start Wage with some experience but less than 1 year of experience - $9.30 Start wage with 1-3 years of experience - $.9.65 Start wage with more than 3 years of experience but less than 7 years - $10.50 More than 7 years of experience - $11.20

Raises

Employees get a 25 cent raise every 3 months for the first year. After that, they get a dime every 3 months for life.

Premiums - 25 cent premium when working second shift and 75 cent premium when working third shift

Manager pay

Assistant store manager

$12.25 starting pay or $13.25 if hired in with experience

Raises

Assistant managers receive a dollar raise after the first year. Assistant managers will receive a additional 75 cents raise after the second year. After that, they will receive a lump sum bonus of $750 at the end of each business year.

Store managers

Salaried at $64,000(No raise opportunities) ($3,000 bonus potential)