Simplify the following text for a Grade 7 native English-speaking person.
Original: They argued that the negative employment effects of minimum wage laws are minimal if not non-existent . For example , they look at the 1992 increase in New Jersey 's minimum wage , the 1988 rise in California 's minimum wage , and the 1990-91 increases in the federal minimum wage .
Simplified: Minimum wage is a relative term .