Citizen.CreateThread(function()
    while true do
        Citizen.Wait(1000)
        local timeNow = os.clock()

        for playerId,data in pairs(playersWorking) do
            Citizen.Wait(10)
            local xPlayer = ESX.GetPlayerFromId(playerId)

            -- is player still online?
            if xPlayer then
                local distance = #(xPlayer.getCoords(true) - data.zoneCoords)

                -- player still within zone limits?
                if distance <= data.zoneMaxDistance then
                    -- calculate the elapsed time
                    local timeElapsed = timeNow - data.time

                    if timeElapsed > data.jobItem[1].time then
                        data.time = os.clock()

                        for k,v in ipairs(data.jobItem) do
                            local itemQtty, requiredItemQtty = 0, 0

                            if v.name ~= _U('delivery') then
                                itemQtty = xPlayer.getInventoryItem(v.db_name).count
                            end

                            if data.jobItem[1].requires ~= 'nothing' then
                            requiredItemQtty = xPlayer.getInventoryItem(data.jobItem[1].requires).count
                            end
            
                            if v.name ~= _U('delivery') and itemQtty >= v.max then
                                xPlayer.showNotification(_U('max_limit', v.name))
                                playersWorking[playerId] = nil
                            elseif v.requires ~= 'nothing' and requiredItemQtty <= 0 then
                                xPlayer.showNotification(_U('not_enough', data.jobItem[1].requires_name))
                                playersWorking[playerId] = nil
                            else
                                if v.name ~= _U('delivery') then
                                    -- chances to drop the item
                                    if v.drop == 100 then
                                        xPlayer.addInventoryItem(v.db_name, v.add)
                                    else
                                        local chanceToDrop = math.random(100)
                                        if chanceToDrop <= v.drop then
                                            xPlayer.addInventoryItem(v.db_name, v.add)
                                        end
                                    end
                                else
                                    xPlayer.addMoney(v.price)
                                end
                            end
                        end
            
                        if data.jobItem[1].requires ~= 'nothing' then
                            local itemToRemoveQtty = xPlayer.getInventoryItem(data.jobItem[1].requires).count
                            if itemToRemoveQtty > 0 then
                                xPlayer.removeInventoryItem(data.jobItem[1].requires, data.jobItem[1].remove)
                            end
                        end
                    end
                else
                    playersWorking[playerId] = nil
                end
            else
                playersWorking[playerId] = nil
            end
        end
    end
end)