"These 30-hour employees will be salaried and receive the same benefits as traditional 40-hour workers, but they will receive only 75 percent of the pay full-time workers earn."
It means that they get the same [non-cash] benefits as other workers and that their cash compensation is the only thing scaled down in proportion to nominal hours worked.
(I'm assuming you were confused by "same benefits" and "75% pay". Benefits, in this context, is the non-cash benefits: health insurance, PTO accrual, etc.)
I was (still am) confused because they say employees will be 'salaried' the same and than receive 75% of full time 'earn'. Salary and earn are the same to me.
Salaried means an employee is paid a fixed amount per calendar time (per week, month, or year). The word "salaried" doesn't specify the amount, just the structure of pay.
The alternative is "hourly" where the employee is paid per hour worked or "piecework" where the person (typically not an employee) is paid per unit of work (bushel picked, unit assembled, etc)
From the original quote: "These 30-hour employees will be salaried and receive the same benefits" means:
"These employees will be salaried [not hourly]." and
"These employees will receive the same [non-cash] benefits."
Nowhere does it say nor imply "These employees will receive the same salary."
How does this sentence make any sense?