About Us Accidents can happen at any time. If your site has people and heavy machinery working together, it may be only a matter of time before an accident happens. Be prepared to help your employees by arranging for worksite health services with 1st Response Occupational Health and Safety. Our team of OSHA certified professionals can be on your job site ready to provide your crew with any necessary medical assistance, so you can feel better about workplace safety. Contact us today to arrange for licensed paramedic services in Chandler, TX or surrounding areas.