Ma. notes: http://www.mass.gov/lwd/unemployment...q.html#pension
5. Do Social Security benefits, pensions and other retirement payments affect my Unemployment Insurance benefits?
Social Security retirement benefits: Receipt of a Social Security retirement benefits will have no effect on your eligibility or reduction in weekly benefits.
Pension and other retirement benefits: Your benefits may be affected by any pension benefits you are receiving. You must report to DUA that you are receiving a pension. You will also need to provide documentation to DUA. The DUA service representative who makes a determination on your claim will explain the law as it applies to you. You will be asked to provide the amount and source of any type of pension or retirement payments when you file your claim. The DUA service representative who makes a determination on your claim will explain the law as it applies to you.
In all cases, you must be able to work, available for work and looking for work in order to collect unemployment benefits. (the end)
I can see getting UI with soc. sec. & retirement/pension benefits (depending on the amount) if you are ready, willing & able to work & looking for work or even possibily get UI if you accept retirement in place of being terminated. ("good cause" to retire) There may be some states but I didn't know there were any where you could voluntarily retire & get UI or get "retirement benefits" & UI but not be looking for work.

