[MA] I need to learn what’s legal to offer employees asap

I had a quick conversation with a director at a Massachusetts nonprofit that’ll be hiring in January.

They want someone who can advise on what’s legal to offer employees in terms of policies, procedures, employment law, etc. (HR head knows this stuff but wants a second pair of eyes.)

Essentially, they want to offer employees a more *radical benefits package but realized they don’t fully know what’s legal to offer employees.

*they want to actually listen to employees and try to give them whatever benefits they want

How can I learn about Massachusetts employment law, policies, procedures, and whatever else I need to know in order to be able to get this role? I’m in Texas.