The minimum net wage in Slovenia is not 763 EUR - this is the minimum gross monthly salary, the minimum net salary in Slovenia is currently only 586 EUR per month. However, in Slovenia you also get two nontaxable salary supplements paid by employer in addition to the regular salary:
1. compensation for commuting / reimbursement of costs of transport to and from work (usually paid in money together with the rest of the wage each month), although this has been reduced in most economic sectors by collective agreements to only 60-80% of the monthly ticket cost of the ceapest public transport available for commuting,
2. meal allowances during the work (also usually paid in money with salary every month) up to a maximum of about 6,5 EUR per working day.
So, in most cases the minimum net wage in Slovenia including the aforementioned supplements is at least 700+ EUR.
But at least in Ljubljana you can`t really save any money if you only get minimal wage and have to pay rent for an apartment. Small one room or studio apartments in Ljubljana usually cost at least 300 EUR/month and rent nomally doesn`t include utility expenses like electricity bill, heating, gas etc. which amount to at least another 100 EUR/month. In Maribor, on the other hand, you can rent a small apartment for as little as 150 EUR/month, so depending on how high your apartment expenses are, if you live modestly and don`t spend too much on food and other 'luxury' you can actually save a few euros even on minimum wage.
I work for one of the phone companies in Ljubljana and earn about 1200 EUR per month, but this includes all 'extras' like regular shift(I work three shifts) and holiday supplements(I often work during weekends and holidays), compensation for commuting(30 km in each direction, I get 70% of costs for monthly train and Ljubljana city public bus transport tickets, usually cca. 80-90 EUR per month altogether, but I drive by car and spend at least 100 EUR for gas alone!) and meal allowance(about 4,15 EUR per working day). My net monthly salary including regular shift supplements is a little over 1000 EUR + about 170 EUR compensation for meal and cost of transportation.
P.S.: Before the EU financial crisis I would get up to 6% bonus on net salary per month, meal compensations were about 6,5 EUR daily, we got 100% refund of commuting expenses etc., but all such 'bonuses' have since been canceled or reduced.