Final answer:
The requirement for contractors to submit forms to MSHA and OSHA depends on their scope of work; some may need to comply with both if they operate in environments regulated by both agencies.
Step-by-step explanation:
Whether contractors are required to submit forms to both the Mine Safety and Health Administration (MSHA) and the Occupational Safety and Health Administration (OSHA) largely depends on the specific type of work they are engaged in and the work environment. Generally, MSHA regulates safety and health standards for mine workers, while OSHA covers most other industries. However, some contractors might perform work that falls under the jurisdiction of both agencies, such as a construction company that operates both on mine sites and in general construction. In such cases, the contractor would be required to comply with both MSHA and OSHA regulations and submit the respective forms. Therefore, the answer to the question is not absolute and can vary based on the contractor's scope of work.