The Fair Labor Standards Act (FLSA) sets the federal minimum wage at $7.25 /hr. Sometimes, wage violations are not obvious. For instance, illegal commissions-only structures, improper paycheck deductions, and failure to compensate for non-tipped work can violate the FLSA, entitling the employee to double damages and attorneys fees.
The FLSA requires that most employees must receive over-time (time-and-a-half) for working over 40 hours in a week. The overtime laws do not apply to all employees. Employers will often improperly classify workers as "managers" or "independent contractors" to avoid paying overtime. If you are not receiving proper over-time you can sue under the FLSA and pay no fees unless you win.
Often businesses fail to pay agreed-upon commissions to their sales people. Langone, Batson, and Lavery has experience bringing claims for unpaid commissions. State laws often protect commissions. Under the Illinois Sales Representatives Act you can get three-times the unpaid commissions, plus attorneys fees. In New York, a commission agreement must be in writing and signed by both the sales person and the employers. Make sure you are fully paid your commissions!