Yichudis forbidden min haTorah, and it applies to both married and single men and women

Prepared for print by Faigy Peritzman
The halachic definition of yichud is seclusion between a man and a woman, indoors or outdoors, with little or no chance of intrusion. This is forbidden min haTorah, and it applies to both married and single men and women.
During the daytime hours, yichud doesn’t apply if two or more men are present, while during nighttime hours three or more men must be present for yichud to be permitted. Nighttime hours are defined as the hours that most people are sleeping, generally 10-11 p.m. to 6-7 a.m., depending on the locality. At least one of the men must be a religious G-d-fearing Jew. But this formula doesn’t hold true with women, since the restrictions of yichud apply to a single man even if multiple women are present.
You’re required to make sure that at least two men, at least one of them frum, are present as long as you’re planning to stay in the office. Otherwise, notify your boss that you can’t stay overtime.
If the oldest boy being watched is over 9 years old, then you can only hire a babysitter who is over 12 years old if one of the following conditions is present: 1) There are at least two more children, boys or girls, sleeping or awake, at home. Preferably, the children should be 7-9 years old, but when necessary, children 6-12 are also allowed. 2) A neighbor who has the key or combination to the house (or if the door is left unlocked), will randomly come in to check up on the babysitter. 3) The entire home area can be viewed via a video camera (or Zoom). This option is only valid if the video will be actively monitored in real time by one of the parents (either the babysitter’s or the boy’s).
While not ideal, this situation is not technically a violation of yichud, since your husband is in the area and could show up at any time. In addition, as long as the door is kept ajar, yichud during daytime hours doesn’t apply.
During daytime hours, keep the door ajar as long as the repairman is present. If that isn’t an option, notify a relative or a neighbor of the situation, and ask them to randomly drop by during that time.
A non-Jewish cleaning lady presents a serious yichud problem for your husband. Leaving the door ajar is one solution. If you (or another household member) are in the neighborhood and your husband assumes that you might be coming home at any time, that removes the issue of yichud as well. But, if for example, your husband knows that you are at work and generally do not come home until after working hours are over, yichud applies.
A nanny-cam is a useful tool to avoid yichud, but only if it’s monitored in real time, as long as the yichud takes place.
Being alone in a car — driving or parked — with a bochur in the late-night hours, when most people are sleeping and there is no constant street traffic or activity, is a yichud issue. It is, however, permitted to be in a car with a bochur as long as there is street traffic or activity, but only if the car windows aren’t tinted or draped.
While very much recommended, most poskim maintain that it isn’t required, especially if by switching doctors you may lose quality of care. Whenever possible, a patient should request that the door to the office be left open or that a nurse be present during the examination. If the visit is scheduled for after office hours, your husband or a child should accompany you.
Even if the yichud problem can be dealt with, it is never a good idea for a female client to be treated by a male therapist, frum or otherwise. In certain limited cases, when no other option exists, a rav should be consulted as to the proper approach to this sensitive situation.
Your niece is forbidden to be alone with your husband, but the ground rules mentioned earlier apply here as well: If the door is left ajar or if you’re expected to come home at any time, yichud isn’t applicable.
While most poskim hold that being in an elevator alone with a woman isn’t a yichud concern, there is a minority opinion who rule stringently. In addition, some men are just uncomfortable being alone with a woman in an elevator even if the restrictions of yichud don’t apply.
(Originally featured in Family First, Issue 866)