I agree with post #2 in that, generous benefits and perks have a tendency to increase productivity and decrease absenteeism, not the opposite. So first you would need to look at the root causes of the problem, and then perhaps a solution would be to incentivize low sick call rates and increased individual and group productivity. You could also tie productivity to advances in the pay scale, or as conditions to be considered for promotion, but generally I think that incentives work better than penalties at bringing about desired employee results.