I Have Partial Bruising That Has Appeared In My Right

I have partial bruising that has appeared in my right big toe,and second one also partial. On the third one it is completely bruise covered. These bruises are only on right foot and the toes mentioned. I started a new job 6 weeks ago that requires standing approximately 9 hours a day. I am male, 46 years old 6 foot 3 inches tall , weight 250 lbs. no signs of bruising anywhere else on my body. Any ideas?