Speech Therapy vs OT: What's the Difference?

Speech therapy addresses communication — understanding language, expressing it, speech clarity, social communication, and augmentative and alternative communication — along with feeding and swallowing. Occupational therapy addresses the activities a child does day to day: dressing, handwriting, self-care, play, and managing sensory input. The clearest overlap is feeding, which both disciplines work on from different angles: a speech-language pathologist addresses the oral motor and swallowing mechanics, while an occupational therapist addresses sensory tolerance, positioning, and the mealtime routine. Children with restricted eating frequently need both. Where communication is the concern, speech therapy is the direct answer.

Key takeaways

Speech therapy is about communication. Occupational therapy is about doing.
A child who is not talking, is hard to understand, or struggles to follow conversation needs an SLP. A child who cannot manage buttons, tolerate a classroom, or write legibly needs an OT.
Feeding is the clearest overlap, and families are frequently sent to one discipline when they need both.
On feeding the SLP addresses oral motor skills, swallowing safety and managing textures. The OT addresses sensory tolerance, seating and postural stability, the mealtime environment, and self-feeding.
A child who gags on textures may have an oral motor difficulty, a sensory difficulty, or both, and the assessment should establish which.
On social participation the SLP addresses the communication side and the OT addresses the sensory and regulatory capacity to be in the situation at all.
With AAC the SLP leads on the communication system and the OT often contributes on physical access: positioning, mounting, switch use, and the motor demands of the interface.
Handwriting is primarily OT, but where written language rather than the physical act is the difficulty, an SLP may be involved.

The short answer

Speech therapy is about communication. Occupational therapy is about doing.

A child who isn't talking, is hard to understand, or struggles to follow conversation needs an SLP. A child who can't manage buttons, tolerate a classroom, or write legibly needs an OT.

Side by side

	Speech therapy	Occupational therapy
Focus	Communication, language, speech sounds, social communication, AAC, feeding and swallowing	Daily activities, fine motor, self-care, sensory processing, handwriting, play
Delivered by	Speech-language pathologist (SLP)	Occupational therapist (OT)
Typical goals	Uses two words to request · produces /s/ clearly · follows two-step instructions · uses an AAC device to comment	Dresses independently · tolerates a haircut · writes legibly · eats a wider range of foods
Session	Play-based, conversation, structured sound practice, AAC modeling	Fine motor tasks, sensory activities, self-care practice, handwriting
Common referrals	Late talking, unclear speech, language disorder, stuttering, autism, feeding	Sensory processing differences, handwriting, self-care, fine motor, feeding
Where they meet	Feeding · social participation · AAC positioning and access

Feeding — where both belong

The clearest overlap, and worth understanding because families are frequently sent to one when they need both.

The SLP addresses: oral motor skills — chewing, moving food, coordinating a swallow · swallowing safety · the mechanics of managing textures

The OT addresses: sensory tolerance of taste, texture, smell, and appearance · seating and postural stability, which affects everything above · the mealtime environment · self-feeding skills

A child who gags on textures may have an oral motor difficulty, a sensory difficulty, or both. Assessment should establish which.

If your child has a very restricted diet, is losing weight, gagging, or distressed at mealtimes, that's a feeding assessment — not something to solve with sensory activities or mealtime strategies from the internet. Ask which discipline your area routes feeding through; it varies.

Where else they meet

Social participation. An SLP addresses the communication side; an OT addresses the sensory and regulatory capacity to be in the situation at all.

AAC. An SLP leads on the communication system; an OT often contributes on physical access — positioning, mounting, switch use, motor demands of the interface.

Handwriting. Primarily OT — but where written language is the difficulty rather than the physical act, an SLP may be involved. → Dysgraphia

School participation. Both, from different directions.

How to decide

Speech therapy if: your child isn't talking as expected · speech is hard to understand · they struggle to follow or hold conversation · they're stuttering · there are feeding or swallowing concerns · they use few or no words and need a communication system

Occupational therapy if: handwriting is difficult · dressing, cutlery, or self-care are behind · sensory input is distressing · fine motor tasks are hard · school participation is affected by regulation

Both if: feeding is the concern · your child is autistic and both communication and sensory processing are involved · the picture is broad

Frequently Asked Questions

What's the difference between speech therapy and OT?

Speech therapy addresses communication — language, speech clarity, social communication, AAC — plus feeding and swallowing. Occupational therapy addresses daily activities: dressing, handwriting, self-care, play, and sensory processing.

Which one handles feeding?

Both, from different angles. The SLP addresses oral motor skills and swallowing; the OT addresses sensory tolerance, positioning, and the mealtime environment. Many children need both.

My child is autistic — which do they need?

Frequently both. Speech therapy for communication including AAC; occupational therapy for sensory processing and daily living. Which matters more depends on the individual profile rather than the diagnosis.

Can they work together?

Yes, and where feeding or AAC is involved they should. Ask whether the providers communicate and whether goals are complementary.

Who helps with handwriting?

Primarily occupational therapy. Where the difficulty is with written expression rather than the physical act of writing, an SLP may also be involved.

My child doesn't speak. Where do we start?

Speech-language pathology, and ask specifically about AAC. Providing a communication system doesn't delay speech — evidence suggests it may support it. → Nonspeaking autism and AAC

Sources

Boyle J, McCartney E, Forbes J, O’Hare A. A randomised controlled trial and economic evaluation of direct versus indirect and individual versus group modes of speech and language therapy for children with primary language impairment. Health Technology Assessment; 2007. doi:10.3310/hta11250
Çorakcı Yazıcıoğlu G, Bumin G. Occupational Therapy Using Sensory Integration for Enhancing Occupational Performance in Children with Autism. Journal of Autism and Developmental Disorders; 2025. doi:10.1007/s10803-025-06970-1
Schertz HH, Mansour-Adwan J, Provizor N, et al. Empowering Language Development: A Comparative Analysis of Parent-Implemented Interventions. American Journal of Speech-Language Pathology; 2025. doi:10.1044/2025_ajslp-24-00335

Medical disclaimer. This page is for general educational purposes and does not constitute medical advice, diagnosis, or treatment. Costs, coverage rules and programs change and vary by location; confirm details locally.

Speech Therapy vs Occupational Therapy for Children