If you already have a contract with the worker, don't worry, this is just a backup for you and for us to understand the details.
The first payment date will be the last day of the current month. Therefor, the first payment amount can be different depending on the worker's time worked till that date.
The first payment date will be the 15th or the last day of the current month (depending of today's date). Therefor, the first payment amount can be different depending on the worker's time worked till that date.
You can choose if you provide benefits to your workers, which and how much they can spend. It is their choice to select the provider or not use it at all. They will do the purchase and upload the invoice in order to be reimbursed afterwards. If the workers exceeds their budget of any type of benefit as presented in the purchase invoice, they will be responsable to assume the surplus.