I got 2 employees in my Sparta shop I can't afford to pay them according to minimum wage, can I reduce their number of hours

Since January 2019, workers in South Africa have been entitled to a minimum wage of R20 per hour, which translates to around R3,500, based on a 40-hour working week.
The new rules apply to all workers in South Africa, with the exception of National Defence Force, National Intelligence Agency and Secret Service employees, as well as volunteers.
Three other groups have different minimum wage standards. Farm workers are now entitled to a minimum wage of R18, domestic employees to R15, and workers on expanded public works programmes to R11.
Employers in South Africa can apply to be made exempted from the minimum wage for up to a year, though at this stage it's unclear as to the circumstances of when an exemption may be granted. If a company fails to pay the minimum wage (without an exemption being granted), they'll face significant fines.
The wage will be reviewed each year to assess whether it's having the desired effect on alleviating poverty and reducing wage inequality.

Why don't You call the Better business bureau? Or go on line

Yes, he said that in one of the primary debates. Sort of an off-hand remark, when talking about the economy and how to sustain it, and if minimum wage needed to be raised. About that time, he said yes, American wages were too high, so we can't raise the minimum. You can't pin Trump down. He often flip-flops, and has about the question of minimum wage. Most Republicans would agree that our wages are too high, they only support the rich.

Multiply hourly wage by number of hours in pay period.
The answer is your gross pay. If this is un-taxed income, you earn that much. If it is taxed, then multiply by about 0.70 to determine take home pay after taxes, although taxes vary by location.

Ex: If I work 16 hours at $9.50/hr, I make $152/week before taxes, but only take home $106.40 ($152 x 0.70) per week after the government takes its cut.

Use a calculator, hand-held or on the computer in accessories, cell phone app, or pencil and paper with simple multiplication formula Wage x Hours Worked Per Pay Period x (1.00 - Tax Rate) = Take Home Pay Per Pay Period.

Well the advantages are obvious for the employee. One major disadvantage is it fuels inflation.

According to ABC news today, this is only a proposal yet to approved
http://abcnews.go.com/Politics/wireStory/seattle-mayor-proposes-phased-15-minimum-wage-23554347
Moreover, this proposal is a phased in increase over a couple of years or more.
So, the minimum wage in Seattle is not as $15 at the present time; Seattle DID NOT (at any time in the past) raise the minimum wage to $15.00
Stories of this proposal have been published since the second half of 2013, but I don't think the proposal has been approved or even voted on.

2.May.2014

Firstly you need to determine/state whether you are using a database application, such as Access, MtSQL or MS SQL and programming them to do create this application, or are you using a programming development tool such as Visual Studio, ASP.NET, PHP or the like, as the solution and guidance will be different for each.
In terms of the data design, you should store the data necessary to identify each employee uniquely and each data point per employee needed to calculate their payroll. You should then store the generic (applys to all employees) such as tax rates, in separate tables and call on it to calculate wages and other paystub data.
For instance, the employee first and last names and tax ID should be a sufficient unique identifier. Create a table for just employees, their names, tax ID, start date, schedule, pay rate, number of deductions, direct bank payment data, etc., and whatever else you decide you need for each employee. You can calculate their wages by multiplying their rate by their schedule and applying the appropriate tax rate and medical/witholding deductions as you go, so calculated data does not need to be stored and consume database space. 
You'll likely need a separate table for common data such as tax rates, one for deductions/witholdings, one for holidays, one for vacation accrual rates, one for medical rates, etc. This data if common to employees does not need to be stored per individual, as that would cause redundant replication of data. If the employees are on an hourly rate, rather than a set salary/wage, then you'll need a table of worked hours per employee, akin to their timesheet data. If you use a timesheet/timecard, the entering and storing only the totals and keeping the physical timesheet for backup records should suffice.
Once you design and populate your database as suggested above, then it's a relatively-simple task of calculating the computed paystub data and storing the salient resulting datapoints for the record.
Consider a reporting application, such as Crystal Reports, for your printing needs, as its far easier to configure Crystal or similar product to format reports, paystubs, checks, etc., than coding these from scratch.
Hope this helps.