M.G.L. c. 149, § 148

Vacation Payments Are Wages

Employers who choose to provide paid vacation to their workers must treat those payments like any other wages.  When employment ends, the worker must be paid for all unused vacation time earned under the employer's policy. 

The AGO urges employers to have clear, written vacation policies.  Every employer should give each new worker a copy of the policy when the worker is hired and ask the worker to acknowledge in writing that the worker understands the policy.

More Information:

The Attorney General's Advisory on Vacation Policies pdf format of Vacation Policies, 1999/1
.