There was dancing to a live band, there was cake to eat, and there were basketball hoops, a giant slide and a blow-up soccer field.

The 32-year-old has never missed the Greenacres Disability Services annual picnic day and this year was no different.

Young started working in supported employment at Greenacres when she was 18.

"She just loves being with her friends and the picnic day is the highlight of her social calendar," her father and executive chairman of Greenacres, Richard Young, said.

"The picnic day is a chance for her to socialise and have fun."

Greenacres, a non-profit organisation, holds the picnic day for its workforce of nearly 250 supported employees.

"She just loves it here," said Mr Young, indicating the organisation's Ralph Black Drive premises.

"It's the best thing that has ever happened to Vanessa. She'd be lost without it, because she is with a network of people and those social connections are so important."

Greenacres chief executive officer Chris Christodoulou said the picnic day was an opportunity for supported employees, nearly all of whom have an intellectual disability, to feel valued.

"This is our chance to celebrate the important work our supported employees do and make them feel appreciated, so we work hard to make the day as enjoyable as possible," he said.

The picnic day included a visit from representatives of the St George Illawarra Dragons, Wollongong Hawks, Wollongong Fire Brigade and Police Force, as well as entertainment from folk band The Humphreys.