Yeah the equation all changes. If part time either expect to be paid less than a full time counterpart to offset the cost per hour of your health insurance, or just pay for it out of pocket.

Say your premium is $500/mo or whatever. At 40hr/wk that's $2.88/hr additional an employer is compensating. At 30hr/wk that's $3.84/hr. At 20hr/wk that's $5.75 more. At 15hr/wk that's $7.70 more.