Associated Industries of Massachusetts is making its members-only Employer Hotline available to all businesses affected by the Boston Marathon bombing.

The AIM Employer Hotline answers more than 800 employer questions each month about employment law, human resource practices and management issues. The hotline features human-resource and employment-law experts with more than 300 years of combined experience.

Scores of businesses in the Copley Square area of Boston near the site of the twin explosions have been closed since Patriots Day as state, federal and local authorities investigate the crime scene. Additional businesses in Watertown and Cambridge were affected by the deadly hunt for the perpetrators.

“AIM is aware that many businesses have been touched by this tragedy, from stores that were damaged in the explosions to companies in and around Boylston Street where employees were seriously injured. We are pleased to place the AIM Employer Hotline and its staff of business experts at the service of these companies that have gone through so much,” said Gary MacDonald, Executive Vice President of the AIM Employers Resource Group.

The Hotline number is: 800.470.6277. Please tell the staff expert who answers the call that your company was affected by the Marathon bombings.