152, § 1(4) states that an employee is "every person in the service of another under any contract of hire, express or implied, oral or written. Massachusetts is an at-will employment state, which means that, in general, an employer may terminate an employee at any time, and for any reason or no reason.This means that only the hours worked beyond 40 in a single workweek are subject to overtime pay, regardless of how many hours are worked in a single day. The primary distinction lies in the parties involved. Exempt employees are not entitled to some labor law protections, including the right to receive overtime pay for working over 40 hours in a week. The simplest definition of an employee is whether a worker is subject to supervision and direction as to the details of his or her work. Learn how to fill out a Financial Statement Form, which you need for many types of cases in Massachusetts Probate and Family Court. Laws: Massachusetts General Laws Title XXI. In Massachusetts, employees who serve in the military are not penalized at work for their service.