The Rules pertaining to a Visitor visa and a work visa are completely different. The former requires the applicant to prove they can support themselves during their visit and that they will leave at the end of the visit. The latter allows you to come to or stay in the UK to do an eligible job that pays at least the prescribed minimum salary.
Unlike a Visitor visa, typically the Rules pertaining to a work visa will set out the exact amount of funds an applicant must have. For example, when you apply for a Skilled Worker visa, you’ll need to have enough money to:
- pay the application fee - the standard fee ranges from £625 to £1,423 depending on your circumstances
- pay the healthcare surcharge - this is usually £624 per year
- support yourself when you arrive in the UK - you’ll usually need to have at least £1,270 available (unless you’re exempt)
You’ll pay a lower application fee if your job is on the shortage occupation list.
A previous Visitor visa refusal for lack of funds and/or ties to home is highly unlikely that to have much/any bearing if you meet all the eligibility criteria for the work visa you’re applying for.