Does a non-B visa remain valid after changing jobs in Thailand?

A user inquired about the visa status of a friend who holds a Non-B visa and is changing jobs in Thailand. The friend is concerned that once her current employer cancels her work permit, she may also need to leave the country to obtain a new visa. Responses clarified that as long as the Non-B visa is not employer-specific, she can remain in the country until the visa's expiration date, but she cannot use it for employment with the new employer without a new work permit.