The doctrine that people who do jobs that require the same level of skill, training, or education are thus entitled to equal pay is known as
the glass ceiling
substantial compensation
comparable worth
affirmative action

The answer is comparable worth.

Explanation:

Comparable worth is the principle in economics that intends to fight against the gender pay gap. It was introduced in the 70s and it states that people who do jobs that require the same level of skill, knowledge, responsibilities and effort, should be compensated equally. This principle was introduced after the acknowledgement that women were recieving up to 20% less pay than men for the same job position.

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.

i believe your answer is:

quickly

i hope that : )