If a man on staff has committed an emotional affair.[/B]
If you are speaking of a sexual affair, and that person was a Board Member or held some Office within the Congregaiton; then the Pastor and one or two of the Elder Members should privately speak with the person and tell them to repent and end the affair, or they would be removed from their Office.
How do you handle
If a woman on staff is pregnant but not married.
There could be reasons for this to occur which would not exclude the woman from serving. Same approach as above though.
If a man on staff comes out as gay.
Man or woman, does not matter. If this occurs, they would be removed from the Staff or their Office, whatever. As well, the same approach as above should be used to explain to that person that should they choose to live the lifestyle of gays/lesbians, they would be asked to leave the Congregation. If they chose to fully repent, and ask God to forgive them, and seek to live a lifestyle pleasing to God, then the Congregation should support them in that endeavor.
If people come in to attend but continue living in unrepentant sin then how long do you risk the leavening of the church?
It is not unusual for there to be unsaved persons within a Congregation. Congregations around the world all have them! All of the Congregation should work to convert such a person, and, as long as they are not causing disruptions within the Church Service, I see no reason to ask them to leave. Jesus said "seventy times seven" in forgiving, and maybe seventy times seven will be required to bring such a person to a "come to Jesus" moment.
If a person, saved or not, is causing disruptions within Church Services, then that person should immediately be confronted by the Pastor and two or more Elders and told to cease with such actions, or leave the Church. If necessary, then two or more of the men of the Congregation should "escort" the person out of the Church building. Also, if necessary, a Peace Bond should be obtained to keep that person from returning and causing any further disruptions.
F.Y.I.
I have seen professed "saved" members of a Congregation cause far more disruptions than an unrepentent sinner. That is how so many Congregational "splits" occur.
On occasion, the Pastor alone should FIRST speak with a person. If it can be resolved in that way, fine. If necessary, then the Pastor and two or more of the Elder Members are to speak with the person and seek to resolve whatever issue is occurring. If necessary, and I have only ever seen it happen one time in over thirty years, then the person causing disruption should be removed from the Congregation. This is usually done by the entire Congregation simply because things had to have gotten bad enough to require the entire Congregation to respond to the person.
F.Y.I. deux:
The Congregational Service time within the life of the Church IS NOT intended for proselytizing the unsaved. It is intended to be a time of praise and worshiping of God. As well as the Pastor "feeding the sheep" with the Word of God. And a time of Christian fellowship among the Congregational members. It is a time for the children of God to celebrate God and grow in love and harmony with each other.