Althea Grebe
Althea completed her Occupational Therapy degree at the University of the Free State in 2011. She has developed strong expertise in cognitive assessment and rehabilitation through her work with individuals affected by brain injuries, neurological conditions, and dementia. This clinical foundation also informs her work in comprehensive driving assessments, where cognitive and functional insight is key.
Since 2016, she has conducted work capacity assessments, including medico-legal evaluations, and has provided expert evidence in the High Court. She is WorkWell Functional Capacity Evaluation (FCE) certified and has nearly a decade of experience in vocational rehabilitation.
Althea has expanded her scope into mental health, becoming a certified Sensory Intelligence® practitioner and completing training in Karen Theunissen’s Psychiatric Functional Capacity Evaluator (PFCE) and Dialectical Behaviour Therapy (DBT) for Occupational Therapists. Most recently, she completed training in nervous system regulation, focusing on breathwork, somatic tools, and clinical reasoning. This has strengthened her trauma-informed approach to rehabilitation.
Known for her calm, practical approach, Althea is the person who quietly solves complex problems — whether clinical or mechanical. Her steady confidence, hands-on mindset, and deep clinical knowledge make her an invaluable part of the team. In her free time, she enjoys running or spending time with her horse, Dawie.
Celeste Matthee
Celeste has been part of FIEUW Occupational Therapy since 2018, providing essential administrative support through her company, South C Virtual Consult, which offers professional administrative assistance and office management services. FIEUW Occupational Therapy is proud to be one of her longstanding clients.
Celeste is the organisational backbone of the practice—gently reminding us of deadlines, confirming appointments with clients, and ensuring every “i” is dotted and every “t” crossed. Hers is the warm, kind voice you’ll hear when you call to make an appointment, and the steady hand behind many of our daily operations.
She is a proud mom of two sons and enjoys spending time with her family and their chocolate Labrador, Kennedy. With her calm presence, attention to detail, and dedication to providing quality service, Celeste ensures everything runs smoothly behind the scenes.
Marleen Joubert
Marleen holds a Master’s degree in Occupational Therapy, a Postgraduate Diploma in Hand Therapy, and a Baccalaureus in Occupational Therapy,.
Her professional experience spans orthopeadic rehabilitation in hospital settings, neurological rehabilitation, and vocational rehabilitation, with a focus on restoring function and supporting return-to-work outcomes. She is certified in WorkWell Functional Capacity Evaluation (FCE) and the Psychiatric Functional Capacity Evaluator (PFCE) protocol developed by Karen Theunissen. Marleen is also a certified PGAP (Progressive Goal Attainment Program) provider and a Sensory Intelligence® Practitioner. In 2025, she completed the Dialectical Behaviour Therapy (DBT) for Occupational Therapists, expanding her clinical tools for supporting clients with emotional regulation challenges.
Marleen is known for her thoughtful, evidence-based approach. When faced with a complex diagnosis or new clinical challenge, she enjoys immersing herself in research to find practical, holistic strategies that best support her clients.
Outside of work, Marleen recharges by spending time in nature—whether it's a multi-day hike, trail running with her husband and their dog, Joy, or braving an icy ocean swim.