Its even worse than that in BC. Here we have what's often referred to as the "EA Exemption;" if you're a "high technology professional," then the ESA doesn't apply. I'm pretty sure the Section 39 (mentioned above) also doesn't apply as Part 3 of the Act is essentially ripped out.

"The hours of work provisions of the Act, including those governing meal breaks, split shifts, minimum daily pay and hours free from work each week, as well as the overtime and statutory holiday provisions, do not apply to “high technology professionals”.

You can find more about it on the governments fact sheet here: http://www.labour.gov.bc.ca/esb/facshts/high_tech.htm

Taken from the US Clinical Trials Site:
http://clinicaltrials.gov/ct/show/NCT00379470?orde r=2

"Since they change direction very rapidly (200 thousand times a second), they do not cause muscles to twitch, nor do they have any effects on other electrically activated tissues in the body (brain, nerves and heart). Since the intensities of TTFields in the body are very low, they do not cause heating."
->So it appears to be low intensity EM radiation at approximately 200 kHz.

"Due to the unique geometric shape of cancer cells when they are multiplying, TTFields cause the building blocks of these cells to move and pile up in such a way that the cells physically explode."

->To me it sounds like a rather localized effect requiring significant tuning to see any effect meaning that you're still safe to use your cell phone and can save the tinfoil for BBQing.