Are they the same thing? They are not. Our neighbors at Harvard explain it well in their Labor Law research guide:
"Labor law and employment law are related but the terms should not be used interchangeably. Labor law in the United States typically focuses on unions and collective bargaining between unions and employers. By contrast, employment law governs the employment relationship between individual employees and their employer. The two areas of law are closely related but are often distinct areas of legal practice."
The Massachusetts Trial Court Library provides a website on "Massachusetts law about employment and employment leave". This is one of numerous pages provided by MTCL. Here you will find "legal information about issues involving employment, including hiring, wages, work leave, hours, discrimination, termination, unemployment and more." The Trial Court Library is a wonderful resource that is open to the public. See this page to get in touch with a librarian from MTCL.
Employment & Labor cover a wide variety of issues that you can find more information about via Mass.gov, including
Unemployment (what the law says)
See this unemployment page for filing for unemployment, etc.
Unions and Collective Bargaining, and more
The City dubs this office "Boston's central resource for workers." They provide worker's rights events, OSHA trainings, and more info intended to protect and promote labor standards and policies that create safe and fair workplaces. Current upcoming events include information sessions for Lyft drivers, domestic workers, discrimination & harassment, and more.