(the following article appeared in Chron)
A minimum wage is a prescribed wage level that must be met or exceeded by employers in all employment contracts, as set forth in the Fair Labor Standards Act. The minimum wage is revised from time to time to adjust for inflating prices. Microeconomics is the study of financial issues from the perspective of individual economic units, such as a single household, small business or individual. The minimum wage has a number of positive and negative effects on businesses, families and individual workers, from a microeconomics perspective.
Effects on Business
Businesses that rely to a large extent on unskilled labor 
generally experience dramatic increases in wage expenses as a result of a
 minimum wage, since a minimum wage virtually eliminates companies' 
ability to negotiate wages for their lowest-level employees. According 
to the U.S. Department of Labor, the minimum wage increased about twenty
 four percent between 2007 and 2009, going from $5.85 to $7.25 per hour.
 Businesses that employ unskilled labor see their profit margins 
diminish and their expenses increase, presenting a challenge to their 
economic growth and introducing a new variable to economic 
decision-making.
Local Employment
Many companies see the minimum wage as a large expense for an 
unskilled worker, which can cause them to impose stricter decision 
criteria for hiring or cut back on hiring altogether. Minimum wage jobs 
are often suited for young people entering the workforce for the first 
time, but, according to the Employment Policy Institute, every 10 
percent increase in the minimum wage causes a five to nine percent 
decrease in youth employment. This can cause a situation where 
individuals with little experience who might happily accept a lower wage
 find themselves unable to find a job. If this trend continues in 
specific regions, local unemployment could rise, possibly raising 
homelessness and crime rates as well.
Effects on Individuals
Employees experience direct benefits from a minimum wage, but 
there are a number of drawbacks to consider as well. The obvious benefit
 to unskilled workers is the guaranteed boost in discretionary income 
provided by a guaranteed wage. Highly skilled and experienced workers 
experience a boost in income as well, since a raise in the lowest wage 
pushes all other wages upward as well. It can be argued that the minimum
 wage has never been high enough to fully support a family. According to
 the U.S. Census, only around seventeen percent of minimum wage earners 
are supporting families on their own. The effects of business's 
reactions to the minimum wage can be detrimental to employees in the 
long run as well. Companies may turn to automation or outsourcing to 
control the increase in wage expenses. This could reduce the number of 
jobs available in the marketplace for unskilled workers, again resulting
 in higher unemployment. Younger employees can benefit greatly from the 
minimum wage. Employees entering the workforce for the first time, with 
no experience, can count on the minimum wage to provide them the income 
they need to handle their first expenses. This, in turn, allows 
heads-of-household more discretionary income to spend on family needs.