sodexo

Will someone please tell me what and where can i order the equivalent of the titres-services voucher,s to pay a Gardener( Garderer wants it like that.) I know they exist (ie see - A 2micile Home Services ) but i am finding it difficult to get info that i comprehend about them - not helped by my poor language skills of course.
Also, separate ish Q - is it the case that if i, the employer, pays €8.50 for a titre service voucher - the worker will get €22.50 per voucher into his hand or does that depend on the kind of work being carried out etc?
thanks