help.. regarding my employee?

my query is regarding my employee.. they stay in our haus.. is it ok if i tel dem go home wen its their day off?? am i being unhuman?? jas wana save elec. water, & lpg gas.. i also charge them 500/monthly 4 d lodging but i suddenly change it 2 800/monthly. that will be Php 33.33 a day/24days. i gav them 250 daily for the salary until 6th mos.