Dumb Question on clearing out weeds and mulching flower beds

I have a high maintence yard with limited time (single mom with a corporate job.) I'm having some young men come in to clear out several flowerbeds from weeds and to mulch. My intention is if I can get someone else to do this part of the heavy lift, I can maintain pulling weeds over the summer. I guess my question is, will I have to pay someone to clear and mulch beds annually? Or will this initial clearling with my maintaining be enough to maintain the appearance? Currently beds are FULL of weeds and while I know weeds will come back, I'm just curious if this investment will be an annual expense.