1. When a comma is needed:
* When "as well as" introduces an additional element in a list:
* Example: "She brought apples, oranges, as well as bananas."
* When "as well as" introduces a phrase that is non-essential to the meaning of the sentence:
* Example: "The restaurant serves traditional dishes, as well as some innovative creations."
* When "as well as" introduces a phrase that acts like an appositive:
* Example: "The CEO, as well as the board of directors, is responsible for making decisions."
2. When a comma is NOT needed:
* When "as well as" connects two words or short phrases:
* Example: "She loves to read novels as well as short stories."
* When "as well as" is part of a single phrase:
* Example: "The company is focusing on quality as well as efficiency."
In summary:
* If "as well as" introduces an additional element, phrase, or appositive, use a comma before it.
* If "as well as" connects two words or phrases or is part of a single phrase, do not use a comma.
It's always best to read your sentence aloud to see if it sounds natural with or without the comma.